Low-temperature-resistant frost-crack-resistant wire cable

Abstract

The utility model provides a low-temperature-resistant frost-crack-resistant wire and cable, which relates to the technical field of wires and cables and comprises a heat-insulating layer, an isolating layer for protecting the heat-insulating layer is arranged on the surface of the heat-insulating layer, and a sizing anti-freezing net made of insulating materials is arranged on the surface of the isolating layer. And a reinforcing sleeve for supporting and protecting the shaping anti-freezing net is arranged on the surface of the shaping anti-freezing net. The advantages of the utility model are that the surface of the wire cable formed by the conductive wire core and the insulation protection sleeve is provided with the thermal insulation layer to carry out thermal insulation protection on the inside, and the shaped anti-freezing net is arranged to carry out reinforcement protection on the shaped thermal insulation layer; the overall stability and connectivity of the heat-preservation and anti-freezing structure of the electric wire and cable are enhanced through the connection between the reinforcing sleeve and the shaping anti-freezing net, meanwhile, the slotted hole structure in the shaping anti-freezing net can be used for intercepting permeating water to a certain degree, and it is avoided that the surface of the electric wire and cable is frozen to damage a heat-preservation layer of the electric wire and cable; and the thermal insulation performance of the wire cable can be effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of wire and cable technology, and in particular to a low-temperature resistant and freeze-crack-resistant wire and cable. Background Technology

[0002] Electric wires and cables are wire products used to transmit electrical energy and signals, and to convert electromagnetic energy. They typically consist of a conductor, an insulation layer, a shielding layer, and a sheath. The conductor conducts current, the insulation layer ensures that the current is transmitted along a specified path, the shielding layer reduces electromagnetic interference, and the sheath provides protection. They are widely used in power, communications, construction, and many other fields, and are an indispensable basic material for modern infrastructure construction and the operation of various electrical equipment.

[0003] However, when existing wires and cables operate in low-temperature environments for extended periods, their insulation layers become brittle and prone to cracking, exposing the internal conductors and causing safety accidents such as short circuits. This also affects the mechanical properties of the cables, impacting the stability and security of power transmission and signal transmission. Utility Model Content

[0004] Therefore, the purpose of this utility model is to propose a low-temperature resistant and freeze-crack-resistant wire and cable to solve the problems mentioned in the background art and overcome the shortcomings of the existing technology.

[0005] To achieve the above objectives, one embodiment of this utility model provides a low-temperature resistant and freeze-crack-resistant wire and cable, comprising a conductive core for power transmission, an insulating protective sleeve covering the surface of the conductive core, an insulation layer made of heat-insulating material on the surface of the insulating protective sleeve, an isolation layer protecting the heat-insulating layer on the surface of the heat-insulating layer, a shaped antifreeze mesh made of insulating material on the surface of the isolation layer, a reinforcing sleeve supporting the shaped antifreeze mesh on the surface of the shaped antifreeze mesh, an antifreeze inner layer made of polyurethane foam on the surface of the reinforcing sleeve, a waterproof layer made of waterproof material on the surface of the antifreeze inner layer, and a fixing sleeve for safety protection on the surface of the waterproof layer.

[0006] Preferably, in any of the above embodiments, the insulating protective sleeve includes an insulating layer, a sealing sleeve, and a protective covering layer. The insulating layer covers the circumference of the conductive wire core, the surface of the insulating layer is covered with the sealing sleeve, and the surface of the sealing sleeve is covered with the protective covering layer.

[0007] The above technical solution is adopted as follows: the insulating layer of the insulating protective sleeve tightly covers the conductive core, effectively isolating the current, preventing leakage, and ensuring the safety of power transmission. The sealing sleeve further seals the insulating layer, blocking the intrusion of external moisture, dust and other impurities, and preventing these impurities from affecting the insulation performance. The outermost protective covering layer enhances the mechanical strength of the insulating protective sleeve, reduces damage to the internal structure caused by external friction and collision, and extends the service life of the wires and cables.

[0008] Preferably, in any of the above embodiments, the insulation layer covers the surface of the protective covering layer, and the isolation layer is made of insulating material.

[0009] The above technical solution involves wrapping an insulation layer over the protective covering layer. By utilizing the properties of the insulation material, heat loss from the inside of the wires and cables is reduced, the internal temperature is kept stable, and the risk of the insulation layer becoming brittle due to low temperatures is reduced. The isolation layer is made of insulating material, which not only prevents external electromagnetic interference from affecting the internal signal transmission of the wires and cables, but also further blocks heat conduction, assists the insulation layer in maintaining the internal temperature, and enhances the stability of the wires and cables in low-temperature environments.

[0010] Preferably, in any of the above embodiments, the shaped antifreeze net has several protective slots inside, and the slots are provided with a ring-shaped tension band.

[0011] The above technical solution employs a combination of internal slots and annular tension bands in the shaped antifreeze net. The slots buffer external pressure, preventing localized stress concentration from damaging the wires and cables. The tension bands enhance the structural strength of the shaped antifreeze net, ensuring its shape remains stable under external force. Simultaneously, the slots intercept some of the permeated moisture, preventing it from freezing on the surface of the wires and cables, protecting the internal insulation layer, and improving the antifreeze performance of the wires and cables.

[0012] Preferably, in any of the above embodiments, the reinforcing sleeve has a boss inside that supports and shapes the slot, and the boss has a pull groove inside that engages the tensioning band. The reinforcing sleeve is made of an elastic material.

[0013] The above technical solution is adopted: the boss inside the reinforcing sleeve cooperates with the slot of the shaping antifreeze net to support and shape the slot, ensuring the structural stability of the shaping antifreeze net. The pull groove inside the boss engages with the tensioning band, which further enhances the tightness of the connection between the reinforcing sleeve and the shaping antifreeze net. The reinforcing sleeve is made of elastic material, which gives it a certain degree of flexibility and resilience, effectively buffering external impact, protecting the internal structure, and maintaining the stability of the overall structure.

[0014] Preferably, in any of the above embodiments, the antifreeze inner layer is located between the reinforcing sleeve and the waterproof layer, and the waterproof layer covers the surface of the antifreeze inner layer.

[0015] The above technical solution is adopted: the antifreeze inner layer is made of polyurethane foam, which has good thermal insulation performance and forms a low temperature barrier between the reinforcing sleeve and the waterproof layer, reducing the impact of external low temperature on the inside of the wire and cable. The waterproof layer is wrapped on the surface of the antifreeze inner layer and is made of waterproof material, which can effectively block the intrusion of external moisture, prevent moisture from penetrating into the inside of the wire and cable and freezing, prevent damage to the internal structure due to ice expansion, and improve the antifreeze performance and safety of the wire and cable.

[0016] Preferably, in any of the above embodiments, the fixing sleeve is made of a plastic material and is securely wrapped around the surface of the waterproof layer.

[0017] The above technical solution is adopted: the fixing sleeve is made of plastic material, which can tightly and firmly cover the surface of the waterproof layer. It can not only further protect the waterproof layer and prevent it from being damaged by external physical forces, but also play a role in fastening the entire wire and cable structure, making the bond between the layers tighter, enhancing the overall mechanical properties of the wire and cable, and ensuring that the wire and cable can operate stably in various environments.

[0018] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows:

[0019] 1. An insulation layer is installed on the surface of the wire and cable formed by the conductive core and the insulating protective sleeve to provide internal insulation and protection. At the same time, a shaped antifreeze net is installed to reinforce and protect the shaped insulation layer. The connection between the reinforcing sleeve and the shaped antifreeze net enhances the overall stability and connectivity of the wire and cable insulation and antifreeze structure. Meanwhile, the slotted structure inside the shaped antifreeze net can intercept the seeping water to a certain extent, preventing ice formation on the surface of the wire and cable and damage to the insulation layer. This effectively improves the insulation performance of the wire and cable, increases its resistance to low temperatures, and prevents freezing and cracking.

[0020] 2. An antifreeze inner layer and a waterproof layer are installed on the outside of the shaped antifreeze net to prevent moisture at low temperatures from penetrating into the inside of the wires and cables, freezing and damaging the internal structure of the wires and cables, thereby improving the antifreeze performance of the wires and cables and enhancing the safety of their use.

[0021] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0023] Figure 1 This is a schematic diagram of the structure according to an embodiment of the present utility model;

[0024] Figure 2 This is a schematic diagram of the fracture structure of the prefabricated antifreeze net according to an embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of the fracture structure of the reinforcing sleeve according to an embodiment of the present invention;

[0026] Figure 4 This is a cross-sectional structural diagram of the insulating protective sleeve according to an embodiment of the present utility model;

[0027] Among them: 1-conductive wire core, 2-insulating protective sleeve, 21-insulating layer, 22-sealing sheath, 23-protective covering layer, 3-thermal insulation layer, 4-isolation layer, 5-shaped antifreeze net, 6-reinforcing sleeve, 7-antifreeze inner layer, 8-waterproof layer, 9-fixing sleeve, 10-slot, 11-tensioning band, 12-bore, 13-groove. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description.

[0029] like Figure 1-4 As shown in the figure, a low-temperature resistant and freeze-crack-resistant wire and cable according to an embodiment of the present invention includes a conductive core 1 for power transmission, an insulating protective sleeve 2 covering the surface of the conductive core 1, an insulation layer 3 made of heat-insulating material on the surface of the insulating protective sleeve 2, an isolation layer 4 protecting the surface of the insulation layer 3, a shaped antifreeze mesh 5 made of insulating material on the surface of the isolation layer 4, a reinforcing sleeve 6 supporting and protecting the surface of the shaped antifreeze mesh 5, an antifreeze inner layer 7 made of polyurethane foam on the surface of the reinforcing sleeve 6, a waterproof layer 8 made of waterproof material on the surface of the antifreeze inner layer 7, and a fixing sleeve 9 for safety protection on the surface of the waterproof layer 8.

[0030] Preferably, the insulating protective sleeve 2 includes an insulating layer 21, a sealing sleeve 22, and a protective covering layer 23. The insulating layer 21 covers the circumference of the conductive core 1, the surface of the insulating layer 21 is covered by the sealing sleeve 22, and the surface of the sealing sleeve 22 is covered by the protective covering layer 23.

[0031] The above technical solution is adopted: the insulation layer 21 of the insulating protective sleeve 2 tightly covers the conductive core 1, effectively isolating the current, preventing its leakage, and ensuring the safety of power transmission. The sealing sleeve 22 further seals the insulation layer 21, blocking the intrusion of external moisture, dust and other impurities, and preventing these impurities from affecting the insulation performance. The outermost protective covering layer 23 enhances the mechanical strength of the insulating protective sleeve 2, reduces the damage to the internal structure caused by external friction and collision, and extends the service life of the wires and cables.

[0032] Preferably, in any of the above schemes, the insulation layer 3 covers the surface of the protective covering layer, and the isolation layer 4 is made of insulating material.

[0033] The above technical solution is adopted: the insulation layer 3 is wrapped on the surface of the protective covering layer 23. By utilizing the properties of the insulation material, the heat loss inside the wire and cable is reduced, the internal temperature is kept stable, and the risk of the insulation layer becoming brittle due to low temperature is reduced. The isolation layer 4 is made of insulating material, which can not only prevent external electromagnetic interference from affecting the internal signal transmission of the wire and cable, but also further block heat conduction, assist the insulation layer 3 in maintaining the internal temperature, and enhance the stability of the wire and cable in low temperature environment.

[0034] Preferably, in any of the above schemes, the shaped antifreeze net 5 has a number of protective slots 10 inside, and the slots 10 are provided with a ring-shaped tension band 11.

[0035] The above technical solution is adopted: the slots 10 inside the shaping antifreeze net 5 and the annular tension band 11 work together. The slots 10 can buffer external pressure and avoid local stress concentration from damaging the wires and cables. The tension band 11 enhances the structural strength of the shaping antifreeze net 5, so that it can maintain its shape stability when subjected to external force. At the same time, the slots 10 can also intercept some of the infiltrated water, prevent water from freezing on the surface of the wires and cables, protect the internal insulation layer 3, and improve the antifreeze performance of the wires and cables.

[0036] Preferably, the reinforcing sleeve 6 has a boss 12 inside to support and shape the slot 10, and the boss 12 has a pull groove 13 inside to engage the tension band 11. The reinforcing sleeve 6 is made of elastic material.

[0037] The above technical solution is adopted: the boss 12 inside the reinforcing sleeve 6 cooperates with the slot 10 of the shaping antifreeze net 5 to support and shape the slot 10, ensuring the structural stability of the shaping antifreeze net 5. The pull groove 13 inside the boss 12 engages with the tensioning band 11, further enhancing the tightness of the connection between the reinforcing sleeve 6 and the shaping antifreeze net 5. The reinforcing sleeve 6 is made of elastic material, which gives it a certain degree of flexibility and resilience, effectively buffering external impact, protecting the internal structure, and maintaining the stability of the overall structure.

[0038] Preferably, in any of the above embodiments, the antifreeze inner layer 7 is located between the reinforcing sleeve 6 and the waterproof layer 8, and the waterproof layer 8 covers the surface of the antifreeze inner layer 7.

[0039] The above technical solution is adopted: the antifreeze inner layer 7 is made of polyurethane foam, which has good thermal insulation performance and forms a low temperature barrier between the reinforcing sleeve 6 and the waterproof layer 8, reducing the impact of external low temperature on the inside of the wire and cable. The waterproof layer 8 covers the surface of the antifreeze inner layer 7 and is made of waterproof material, which can effectively block the intrusion of external moisture, prevent moisture from penetrating into the inside of the wire and cable and freezing, prevent the internal structure from being damaged by the expansion of ice, and improve the antifreeze performance and safety of the wire and cable.

[0040] Preferably, of any of the above solutions, the fixing sleeve 9 is made of plastic material and is tightly wrapped around the surface of the waterproof layer 8.

[0041] The above technical solution is adopted: the fixing sleeve 9 is made of plastic material, which can tightly and firmly cover the surface of the waterproof layer 8. It can not only further protect the waterproof layer 8 and prevent it from being damaged by external physical forces, but also play a role in fastening the entire wire and cable structure, making the bond between the layers tighter, enhancing the overall mechanical properties of the wire and cable, and ensuring that the wire and cable can operate stably in various environments.

[0042] The working principle of this utility model for a low-temperature resistant and freeze-crack-resistant wire and cable is as follows:

[0043] The conductive core 1 is responsible for power transmission. The insulating protective sleeve 2, consisting of an insulating layer 21, a sealing sheath 22, and a protective covering layer 23, sequentially insulates, seals, and protects the conductor, ensuring safe power transmission. The heat insulation layer 3 utilizes its own heat insulation properties to reduce internal heat loss, maintain internal temperature, and reduce the risk of the insulation layer becoming brittle. The isolation layer 4 blocks external electromagnetic interference and heat conduction, assisting in heat insulation. The slots 10 of the shaped antifreeze mesh 5 buffer pressure and intercept moisture. The tension band 11 enhances structural strength. The bosses 12 and grooves 13 of the reinforcing sleeve 6 cooperate with the shaped antifreeze mesh 5 to enhance overall stability. The antifreeze inner layer 7 forms a heat insulation barrier to reduce the impact of external low temperatures. The waterproof layer 8 blocks external moisture intrusion and prevents internal freezing. The outermost fixing sleeve 9 secures all layers and enhances overall mechanical performance. The close cooperation of all layers effectively improves the heat insulation and antifreeze performance of the wire and cable, prevents freezing and cracking, and ensures stable and safe transmission of power and signals in low-temperature environments.

[0044] Compared with the prior art, the present invention has the following advantages:

[0045] 1. An insulation layer 3 is installed on the surface of the wire and cable formed by the conductive core 1 and the insulating protective sleeve 2 to provide internal insulation and protection. At the same time, a shaped antifreeze net 5 is installed to reinforce and protect the shaped insulation layer 3. The connection between the reinforcing sleeve 6 and the shaped antifreeze net 5 enhances the overall stability and connectivity of the wire and cable insulation and antifreeze structure. Meanwhile, the slotted structure 10 inside the shaped antifreeze net 5 can intercept the seeping water to a certain extent, preventing the surface of the wire and cable from freezing and damaging the insulation layer 3. This can effectively improve the insulation performance of the wire and cable, increase its resistance to low temperatures, and prevent freezing and cracking.

[0046] 2. An antifreeze inner layer 7 and a waterproof layer 8 are installed on the outside of the shaped antifreeze net 5 to prevent moisture at low temperatures from penetrating into the inside of the wire and cable, freezing and damaging the internal structure of the wire and cable, thereby improving the antifreeze performance of the wire and cable and enhancing the safety of its use.

Claims

1. A low-temperature-resistant, anti-cracking electric wire cable comprising a conductive core (1) for power transmission, the surface of said conductive core (1) being provided with an insulating protective sheath (2) for the protective covering thereof, characterized in that: The surface of the insulating protective sleeve (2) is provided with an insulation layer (3) made of insulation material, the surface of the insulation layer (3) is provided with an isolation layer (4) for protection, the surface of the isolation layer (4) is provided with a shaped antifreeze net (5) made of insulation material, the surface of the shaped antifreeze net (5) is provided with a reinforcing sleeve (6) for support and protection, the surface of the reinforcing sleeve (6) is provided with an antifreeze inner layer (7) made of polyurethane foam, the surface of the antifreeze inner layer (7) is provided with a waterproof layer (8) made of waterproof material, and the surface of the waterproof layer (8) is provided with a fixing sleeve (9) for safety protection.

2. A low temperature resistant, freeze resistant electrical wire cable as defined in claim 1, wherein: The insulating protective sleeve (2) includes an insulating layer (21), a sealing sleeve (22) and a protective covering layer (23). The insulating layer (21) covers the circumference of the conductive core (1), the surface of the insulating layer (21) is covered with the sealing sleeve (22), and the surface of the sealing sleeve (22) is covered with the protective covering layer (23).

3. A low temperature resistant, freeze resistant electrical wire cable as defined in claim 2, wherein: The insulation layer (3) covers the surface of the protective covering layer, and the isolation layer (4) is made of insulating material.

4. A low temperature resistant, freeze resistant electrical wire cable as defined in claim 3, wherein: The shaped antifreeze net (5) has several protective slots (10) inside, and the slots (10) are provided with a ring-shaped tension band (11).

5. A low temperature resistant, freeze resistant electrical wire cable as defined in claim 4, wherein: The reinforcing sleeve (6) has a boss (12) inside to support and shape the slot (10). The boss (12) has a pull groove (13) inside to engage the tension band (11). The reinforcing sleeve (6) is made of elastic material.

6. A low temperature resistant, freeze resistant electrical wire cable as defined in claim 5, wherein: The antifreeze inner layer (7) is located between the reinforcing sleeve (6) and the waterproof layer (8), and the waterproof layer (8) covers the surface of the antifreeze inner layer (7).

7. A low temperature resistant, freeze resistant electrical wire cable as defined in claim 6, wherein: The fixing sleeve (9) is made of plastic material and is tightly wrapped around the surface of the waterproof layer (8).

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