Fireproof polyvinyl chloride insulated wire cable

Abstract

The utility model discloses a fireproof polyvinyl chloride insulated wire cable, which comprises a conductor. A protection assembly is arranged on the outer side of the conductor, the conductor and the protection assembly form a cable core, a limiting assembly is arranged on the outer side of the protection assembly, and the cable core is clamped and limited through the limiting assembly, so that the cable core is not too close, the friction problem between the cable cores is reduced, and the risk of short circuit is reduced; a supporting assembly is arranged on the outer side of the limiting assembly, and a flame-retardant assembly is arranged on the outer side of the supporting assembly. According to the fireproof polyvinyl chloride insulated wire and cable, after the cable cores are placed in the mounting grooves of the limiting seats, the filling grooves are clamped through the filling blocks, so that the limiting seats can fix the cable cores in the mounting grooves, the cable cores are limited, the problem of short circuit caused by too close distance between the cable cores is solved, and the service life of the cable cores is prolonged. And the problems of damage and aging of the cable caused by friction between the cable cores are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of fire-resistant polyvinyl chloride insulated wires and cables, in particular to a fire-resistant polyvinyl chloride insulated wire and cable. Background Art

[0002] Wires and cables are wire products that transmit electrical energy, electrical signals and realize electromagnetic energy conversion. In order to increase the service life of the cables, it is necessary to set a protective structure on the outside of them. However, the existing fire-resistant polyvinyl chloride insulated wires and cables still have certain defects when used, such as;

[0003] For example, a polyvinyl chloride insulated unsheathed wire and cable with publication number CN211879058U is provided with corresponding polyvinyl chloride insulation layer, shielding layer, waterproof layer and wear-resistant layer, so that the wire and cable itself has insulation, anti-interference, waterproof and wear-resistant properties, and has high practicality. The polyvinyl chloride insulation layer is arranged inside the wire body to prevent the release of toxic gases, and a steel wire structure is arranged inside the shielding layer to provide overall tensile resistance, ensure that each layer structure will not be damaged due to pulling, and have a long service life.

[0004] However, the PVC insulated unsheathed wire and cable still has the following disadvantages in actual use:

[0005] The service life of the copper core conductor is ensured by setting a multi-layer structure on the outside. In a multi-core cable, if the distance between two core wires is too close, the risk of short circuit may increase. Since the core wires are not separated, friction will occur between the core wires, which may cause damage and aging of the cable and shorten the service life of the cable.

[0006] In view of the above problems, it is urgent to carry out innovative design based on the original fire-resistant polyvinyl chloride insulated wires and cables. Therefore, we proposed that fire-resistant polyvinyl chloride insulated wires and cables can solve the above problems well. Utility Model Content

[0007] The utility model aims to provide a fire-resistant polyvinyl chloride insulated wire and cable to solve the problem in the current market proposed by the above-mentioned background technology that a multi-layer structure is arranged on the outside of a copper core conductor to ensure its service life. In a multi-core cable, if the distance between two core wires is too close, the risk of short circuit may increase. Since the core wires are not separated, friction will occur between the core wires, which may cause damage and aging of the cable and shorten the service life of the cable.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fire-resistant polyvinyl chloride insulated wire and cable, comprising a conductor;

[0009] A protective component is arranged outside the conductor, and the conductor and the protective component are collectively referred to as a cable core. A limiting component is arranged outside the protective component, and the cable core is clamped and limited by the limiting component so that the cable cores are not too close to each other, thereby reducing the friction problem between the cable cores and thus reducing the risk of short circuit;

[0010] A support component is arranged outside the limit component, and the limit component is supported by the support component, thereby reducing the damage problem caused by low cable supporting force. A flame retardant component is arranged outside the support component, and the flame retardant component improves the fire resistance of the cable.

[0011] Preferably, the protective component includes an insulating layer installed on the outside of the conductor; the insulating layer is made of mica, a shielding layer is woven on the outside of the insulating layer, the shielding layer is made of alloy wire, a thermal insulation sleeve is arranged on the outside of the shielding layer, a sheath layer is arranged on the outside of the thermal insulation sleeve, and the sheath layer is made of polytetrafluoroethylene.

[0012] Preferably, the limit assembly includes a limit seat; an installation groove is opened on the limit seat, a cable core is clamped inside the installation groove, the installation groove is opened in a "cross" shape, and filling grooves are opened on opposite sides of the two transverse installation grooves, the filling groove is connected to the two transverse installation grooves, and a filling block is clamped inside the filling groove.

[0013] Preferably, a buffer block is arranged inside the limit seat, and a buffer ball is installed inside the buffer block.

[0014] Preferably, the support assembly comprises a rubber layer sleeved on the outer side of the limiting seat; support columns and support balls are arranged inside the rubber layer.

[0015] Preferably, the flame retardant assembly includes a protective sleeve sleeved on the outside of the rubber layer, a waterproof layer is arranged on the outside of the rubber layer, and the waterproof layer is made of acrylonitrile butadiene rubber.

[0016] Preferably, a flame retardant layer is provided on the outer side of the waterproof layer, the flame retardant layer is made of polyvinyl chloride, and wear-resistant bumps are provided on the surface of the flame retardant layer, the wear-resistant bumps are made of fluororubber.

[0017] Compared with the prior art, the utility model has the following beneficial effects: after the fire-resistant polyvinyl chloride insulated wire and cable places the cable core inside the installation groove of the limit seat, the filling groove is clamped by the filling block, so that the limit seat can fix the cable core inside the installation groove, so that the cable core is limited, which not only reduces the short circuit problem caused by the close distance between the cable cores, but also reduces the damage and aging of the cable caused by the friction between the cable cores. The specific contents are as follows:

[0018] (1) The installation groove of the limit assembly is convenient for installing and clamping the cable core. When the cable core is clamped in the installation groove, the filling groove can be clamped by the filling block to make the cable core limit quickly and conveniently. At this time, the distance between the cable cores is consistent, which not only reduces the short circuit problem caused by the close distance between the cable cores, but also reduces the damage and aging of the cable caused by friction between the cable cores;

[0019] (2) The buffer block inside the limit seat of the limit assembly performs a buffering operation through a buffer ball. When the cable is squeezed, the buffer ball buffers the squeezing force, so that the buffer ball can support the limit seat, reducing the problem of cable core movement caused by squeezing;

[0020] (3) The shielding layer of the protective component is made of alloy wire. The alloy wire material not only shields the electromagnetic field within the insulation layer, reducing the problem of cross-interference caused by the mutual influence of the electric field between the cable cores, but also facilitates the subsequent laying and improves the practicality of the cable;

[0021] (4) The sheath layer of the protective component is made of polytetrafluoroethylene. Polytetrafluoroethylene can form a sealing layer when a fire occurs, preventing oxygen from entering the cable and causing the fire to increase, thereby greatly improving the fire resistance of the cable core.

[0022] (5) The support columns and support balls in the rubber layer of the support assembly facilitate supporting the limit seat. The support by the support columns and support balls with higher density reduces the problem of insufficient support strength caused by the soft setting of the limit seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall front view structure of the utility model;

[0024] Figure 2 It is a schematic diagram of the overall enlarged structure of the utility model;

[0025] Figure 3 This is a schematic diagram of the front view cutaway structure of the utility model;

[0026] Figure 4 It is a schematic diagram of the vertical cross-section structure of the utility model;

[0027] Figure 5 This is a schematic diagram of the separation structure of the limit seat of the utility model;

[0028] Figure 6 It is a schematic diagram of the internal cutaway structure of the cable core of the utility model.

[0029] In the figure: 1. conductor; 2. insulation layer; 3. shielding layer; 4. thermal insulation sleeve; 5. sheath layer; 6. limit seat; 7. mounting slot; 8. filling slot; 9. filling block; 10. buffer block; 11. buffer ball; 12. rubber layer; 13. support column; 14. support ball; 15. protective cover; 16. waterproof layer; 17. flame retardant layer; 18. wear-resistant bump. DETAILED DESCRIPTION

[0030] 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.

[0031] Embodiment 1:

[0032] In this embodiment, in order to separate the cable cores, the cable cores are isolated by setting a limit assembly, the purpose of which is to reduce the problem of cable damage caused by friction between the cable cores. Figure 4 and Figure 5 As shown, it includes a conductor 1, a protective component is arranged on the outside of the conductor 1, and the conductor 1 and the protective component are collectively called a cable core, a limiting component is arranged on the outside of the protective component, the cable core is clamped and limited by the limiting component, so that the cable cores are not too close, thereby reducing the friction problem between the cable cores, and thus reducing the risk of short circuit, a supporting component is arranged on the outside of the limiting component, the limiting component is supported by the supporting component, and the damage problem caused by the low supporting force of the cable is reduced, a flame retardant component is arranged on the outside of the supporting component, and the flame retardant component improves the fire resistance of the cable, and the limiting component includes a limiting seat 6; an installation groove 7 is opened on the limiting seat 6, and the cable core is clamped inside the installation groove 7, the installation groove 7 is opened in a "cross" shape, and the two installation grooves 7 opened horizontally are opened on the opposite sides with filling grooves 8, and the filling grooves 8 are filled. The filling slot 8 is connected with two installation slots 7 opened laterally, a filling block 9 is clamped inside the filling slot 8, a buffer block 10 is arranged inside the limiting seat 6, and a buffer ball 11 is installed inside the buffer block 10. After the cable core is placed inside the installation slot 7 of the limiting seat 6, the filling slot 8 is clamped by the filling block 9, so that the limiting seat 6 can fix the cable core inside the installation slot 7, so that the cable core is limited, which not only reduces the short circuit problem caused by the close distance between the cable cores, but also reduces the damage and aging of the cable caused by the friction between the cable cores. In addition, a buffer block 10 is arranged inside the limiting seat 6, and the buffer ball 11 inside the buffer block 10 allows the cable to be buffered when it is squeezed, thereby reducing the problem of cable core movement due to squeezing, and greatly improving the service life of the cable.

[0033] Embodiment 2:

[0034] In this embodiment, in order to increase the service life of the cable core, a protective component is provided for protection, the purpose of which is to reduce the crosstalk problem caused by the electric field between different conductors 1. Figure 4 and Figure 6 As shown, the protective component includes an insulating layer 2 installed on the outside of the conductor 1; the insulating layer 2 is made of mica, and a shielding layer 3 is woven on the outside of the insulating layer 2, and the shielding layer 3 is made of alloy wire. An insulating sleeve 4 is arranged on the outside of the shielding layer 3, and a sheath layer 5 is arranged on the outside of the insulating sleeve 4. The sheath layer 5 is made of polytetrafluoroethylene, and the cable core is formed by arranging an insulating layer 2 on the outer surface of the conductor 1 to separate the electric field between the conductors 1. The insulating layer 2 is made of mica, and the mica material has high insulation strength and arc resistance, which can effectively prevent internal discharge and improve the safety performance of the cable. The mica material has good high temperature resistance and can work stably in a high temperature environment, so that the overall cable can work stably under high power transmission conditions. In the process, alloy wires are woven by a braiding machine on the outside of the insulating layer 2 to form a shielding layer 3. The alloy wire material not only shields the electromagnetic field within the insulating layer 2 and plays a certain protective role, but also ensures that the cable is soft and shaped, which is convenient for later laying and reduces the crosstalk problem caused by the electric field between different conductors 1. At this time, a heat insulation sleeve 4 is sleeved on the outside of the shielding layer 3, so that the high temperature in the external environment will not affect the inside of the cable, which greatly improves the service life of the cable. A sheath layer 5 is attached to the outside of the shielding layer 3. The sheath layer 5 is made of polytetrafluoroethylene. The polytetrafluoroethylene material can form a sealing layer when a fire occurs to prevent oxygen from entering the inside of the cable, so as to perform fire prevention operations and greatly improve the overall service life.

[0035] Embodiment three:

[0036] In this embodiment, in order to increase the overall service life, a flame retardant component is provided for protection, the purpose of which is to reduce the damage caused by fire on the outside of the cable. Figure 1-Figure 4As shown, the support component includes a rubber layer 12 sleeved on the outside of the limit seat 6; a support column 13 and a support ball 14 are arranged inside the rubber layer 12, and the flame retardant component includes a protective cover 15 sleeved on the outside of the rubber layer 12, and a waterproof layer 16 is arranged on the outside of the rubber layer 12, and the waterproof layer 16 is made of acrylonitrile butadiene rubber. A flame retardant layer 17 is sleeved on the outside of the waterproof layer 16, and the flame retardant layer 17 is made of polyvinyl chloride. The surface of the flame retardant layer 17 is provided with wear-resistant protrusions 18, and the wear-resistant protrusions 18 are made of fluororubber. The rubber layer 12 arranged on the outside of the limit seat 6 makes the cable as a whole relatively soft, which is convenient for storage and transportation. The support column 13 and the support ball 14 in the rubber layer 12 facilitate the support of the limit seat 6, reducing the problem of insufficient support strength caused by the soft setting of the limit seat 6. A protective cover 15 is arranged on the outside of the rubber layer 12 to conveniently wrap the internal structure, and the outer waterproof layer 16 is made of acrylonitrile butadiene rubber, which has good waterproof performance and reduces the problem of external environment affecting the internal structure. The flame retardant layer 17 arranged on the outside of the waterproof layer 16 is made of polyvinyl chloride, which has good flame retardant performance and can slow down the flame propagation speed, thereby enhancing the safety of the cable. The wear-resistant protrusion 18 on the outside of the flame retardant layer 17 is made of fluororubber, which has good wear resistance, reduces the inconvenience caused by wear on the outer side of the cable, and greatly improves the service life of the entire cable. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0037] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fire-resistant polyvinyl chloride insulated wire and cable, comprising a conductor (1); It is characterized in that Also includes: A protective component is arranged outside the conductor (1), and the conductor (1) and the protective component are collectively referred to as a cable core. A limiting component is arranged outside the protective component, and the cable core is clamped and limited by the limiting component so that the cable cores are not too close to each other, thereby reducing the friction problem between the cable cores and thus reducing the risk of short circuit; A support component is arranged outside the limit component, and the limit component is supported by the support component, thereby reducing the damage problem caused by low cable support force. A flame retardant component is arranged outside the support component, and the flame retardant component improves the fire resistance of the cable; The protective component comprises an insulating layer (2) installed on the outside of the conductor (1), a shielding layer (3) is woven on the outside of the insulating layer (2), a heat insulating sleeve (4) is arranged on the outside of the shielding layer (3), and a sheath layer (5) is arranged on the outside of the heat insulating sleeve (4); The limiting assembly comprises a limiting seat (6); a mounting groove (7) is provided on the limiting seat (6), a cable core is clamped inside the mounting groove (7), the mounting groove (7) is provided in a "cross" shape, and a filling groove (8) is provided on opposite sides of two transversely provided mounting grooves (7); The support assembly comprises a rubber layer (12) sleeved on the outside of the limit seat (6); a support column (13) and a support ball (14) are arranged inside the rubber layer (12); The flame retardant assembly comprises a protective sleeve (15) sleeved on the outside of a rubber layer (12), and a waterproof layer (16) is provided on the outside of the rubber layer (12).

2. A fire-resistant polyvinyl chloride insulated wire and cable according to claim 1, characterized in that: The insulating layer (2) is made of mica, the shielding layer (3) is made of alloy wire, and the sheath layer (5) is made of polytetrafluoroethylene.

3. The fire-resistant polyvinyl chloride insulated wire and cable according to claim 1, characterized in that: The filling groove (8) is connected to two installation grooves (7) opened transversely, and a filling block (9) is clamped inside the filling groove (8).

4. The fire-resistant polyvinyl chloride insulated wire and cable according to claim 1, characterized in that: A buffer block (10) is arranged inside the limit seat (6), and a buffer ball (11) is installed inside the buffer block (10).

5. The fire-resistant polyvinyl chloride insulated wire and cable according to claim 1, characterized in that: The waterproof layer (16) is made of acrylonitrile butadiene rubber.

6. A fire-resistant polyvinyl chloride insulated wire and cable according to claim 5, characterized in that: The outer side of the waterproof layer (16) is provided with a flame retardant layer (17), the flame retardant layer (17) is made of polyvinyl chloride, and the surface of the flame retardant layer (17) is provided with wear-resistant bumps (18), the wear-resistant bumps (18) are made of fluororubber.

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