Novel high-flame-retardant fireproof control cable

Abstract

The utility model discloses a novel high-flame-retardant fireproof control cable. The cable comprises a plurality of insulating wire cores, an isolating layer, a waterproof layer and an outer sheath which are arranged from inside to outside. Wherein the waterproof layer comprises a coating layer, a wrapping and fixing layer and a protective layer. According to the utility model, a plurality of waterproof barriers are arranged, so that the interior and the insulating layer of the cable can be effectively prevented from being influenced by a humid environment, and the stability and safety of electric power and signal transmission are ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to control cable technical field, concretely relates to a novel high flame -retardant fire -resistant control cable. BACKGROUND

[0002] Control cable is suitable for industrial and mining enterprises, energy transportation department, supply AC rated voltage 450 / 750 volts below control, protection line and so on occasion uses control cable.

[0003] The utility model discloses a novel high flame -retardant fire -resistant control cable, including the control cable including a plurality of insulated wire cores, insulated wire core is with conductor, fire -resistant layer, insulating layer constitutes, fire -resistant layer is around the conductor outside, and the insulating layer is extruded to the fire -resistant layer outside;The plurality of insulated wire cores are outside around the high flame -retardant around the cable core one with banded cable core;The cable core is outside setting inner sheath;The inner sheath is extruded to the flame -retardant filling layer outside;The flame -retardant filling layer is outside around the high flame -retardant banded cable two;The high flame -retardant banded cable two is extruded to the halogen -free low -smoke outer protective layer and forms cable.

[0004] However, through the applicant's in-depth study, it is found that the existing products have certain defects, and the waterproof performance has obvious short board. In some humid environment, water can easily penetrate into the cable, which may have adverse effects on the electrical performance of the cable, such as causing short circuit, reducing insulation performance, etc., thereby affecting the normal operation and stability of the entire line system, and even may cause safety accidents. UTILITY MODEL CONTENTS

[0005] In order to overcome the above technical defects, the utility model provides a novel high flame -retardant fire -resistant control cable.

[0006] In order to solve the above problem, the utility model is realized according to the following technical scheme:

[0007] The utility model discloses a novel high flame -retardant fire -resistant control cable, the cable includes a plurality of insulated wire cores, isolation layer, waterproof layer and outer sheath arranged from inside to outside;

[0008] Among them, the waterproof layer includes coating layer, fixed layer and protection layer.

[0009] Preferably, the insulated wire core includes a conductor, a shielding layer and an insulating layer.

[0010] The shielding layer is wound on the conductor.

[0011] The insulating layer is a polyphosphazene elastomer material coated on the shielding layer.

[0012] Preferably, the shielding layer is a metal mesh braid layer.

[0013] Preferably, the isolation layer is an aluminum polyethylene composite tape.

[0014] Preferably, the outer sheath is a low-smoke halogen-free flame-retardant polyolefin material.

[0015] Preferably, the protective layer is wrapped on the isolation layer, and the protective layer is a polyvinyl chloride or polypropylene material;

[0016] The wrapping layer is arranged outside the protective layer, and the wrapping layer is a polyester cloth;

[0017] The coating layer is arranged on the outermost side of the waterproof layer, and the coating layer is a polyurethane material.

[0018] Preferably, a filling layer is arranged between the insulated core and the isolation layer and between the insulated cores.

[0019] Preferably, the filling layer is a water-blocking rope.

[0020] Compared with the prior art, the utility model has the beneficial effects that:

[0021] The utility model discloses a novel high flame-retardant fireproof control cable, the cable includes from inside to outside the arrangement of multiple insulated cores, isolation layer, waterproof layer and outer sheath, wherein, the waterproof layer includes coating layer, wrapping layer and protective layer.

[0022] The waterproof layer of the utility model is covered with the isolation layer of multilayer structure, further strengthens the protection of insulated core, prevents moisture erosion and leads to electrical performance decline or short circuit fault. The coating layer of waterproof layer prevents moisture diffusion to the inner layer structure, thereby ensuring the dry environment inside the cable, and guaranteeing that the insulation performance is not damaged, the wrapping layer can keep the shape of waterproof layer stable, prevents the phenomenon that the coating layer appears rupture or peeling, and the protective layer can keep its moisture-proof performance, prevents moisture accumulation in the cable, and further reduces the electrical safety hidden danger caused by damp. BRIEF DESCRIPTION OF DRAWINGS

[0023] The specific embodiment of the utility model will be further explained in detail below in combination with the drawings, wherein:

[0024] Fig. 1 It is a cross section schematic view of a novel high flame-retardant fireproof control cable of the utility model.

[0025] Fig. 2 It is a cross section schematic view of a novel high flame-retardant fireproof control cable of the utility model.

[0026] In the drawings:

[0027] 10-insulated core;

[0028] 101-conductor;

[0029] 102 - Shielding layer;

[0030] 103 - Insulation layer;

[0031] 20-filler layer;

[0032] 30 - Fireproof isolation layer;

[0033] 40 - Waterproof layer;

[0034] 401 - Protective layer;

[0035] 402 - Encapsulation layer;

[0036] 403 - Coating layer;

[0037] 50 - Outer sheath. Detailed Implementation

[0038] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0039] like Figs. 1-2 As shown, this utility model discloses a preferred structure of a novel high flame-retardant fireproof control cable.

[0040] Example 1

[0041] like Figs. 1-2 As shown, the present invention discloses a novel high flame-retardant fireproof control cable, the cable comprising multiple insulated cores 10 arranged from the inside out, an isolation layer 30, a waterproof layer 40, and an outer sheath 50; wherein, the waterproof layer 40 comprises a coating layer 403, a reinforcing layer 402, and a protective layer 401.

[0042] In one specific implementation, the insulated core 10 includes a conductor 101, a shielding layer 102, and an insulating layer 103;

[0043] The shielding layer 102 is wound around the conductor 101;

[0044] The insulation layer 103 is a polyphosphazene elastomer material covering the shielding layer 102. The polyphosphazene elastomer has good insulation properties, good heat resistance and strong aging resistance. During long-term use, it can resist the erosion of various factors such as ultraviolet rays, chemicals and humidity, thereby extending the service life of the cable and reducing the frequency of maintenance or replacement due to the deterioration of the insulation layer performance.

[0045] In one specific implementation, the shielding layer 102 is a metal mesh braided layer.

[0046] In one embodiment, the isolation layer 30 is an aluminum-polyethylene composite tape. The aluminum layer of the aluminum-polyethylene composite tape has good moisture resistance and can reflect a portion of the external water vapor, reducing the chances of water vapor contacting the internal cable structure. The polyethylene layer provides a certain degree of flexibility and sealing performance, so that the isolation layer can tightly wrap the insulated core, preventing water vapor from entering from the gap. Even in a relatively high humidity environment, such as an underground cable trench or a humid industrial plant, the isolation layer can play a preliminary role in preventing moisture, maintaining the relative dryness of the environment around the insulated core.

[0047] In one embodiment, the outer sheath 50 is a low-smoke halogen-free flame-retardant polyolefin material, which has both water resistance and good fire resistance. Due to the relatively tight molecular structure of the polyolefin material, water molecules are difficult to penetrate. As the outermost layer of the cable, it prevents external liquid water, such as rain, dew, and standing water, from directly contacting the internal waterproof layer and the cable core structure. When the cable is in a humid environment or is subjected to temporary water immersion, the outer sheath can effectively block the intrusion of water, serving as a preliminary water barrier. This helps to maintain a dry environment inside the cable, and cooperates with the internal waterproof layer to enhance the overall water resistance of the cable. In the event of a fire or high-temperature environment, the flame-retardant components in the polyolefin material will undergo a chemical reaction. A carbonized layer forms on the surface of the material, which can act as a heat and oxygen barrier, preventing the flame from spreading further inward.

[0048] In one embodiment, the coating layer 403 is provided on the outermost side of the waterproof layer 40. The coating layer 403 is made of polyurethane material, which has extremely low water absorption and high sealing performance, and can form a continuous waterproof film on the surface of the cable to effectively block the intrusion of liquid water.

[0049] The wrapping layer 402 is provided on the outside of the protective layer 401. The wrapping layer 402 is made of polyester cloth, which provides structural support to prevent the waterproof layer from breaking or deforming when subjected to external forces, ensuring its waterproof integrity. The wrapping layer uses polyester cloth because it has high tensile strength and flexibility, and can maintain the shape of the waterproof layer stable when the cable is subjected to mechanical external forces such as bending, stretching, and extrusion, preventing damage to the internal protective layer and the more internal structure.

[0050] The protective layer 401 wraps the isolation layer 30. The protective layer 401 is made of polyvinyl chloride or polypropylene material; the protective layer further prevents water vapor from penetrating from the inside, forming a comprehensive waterproof barrier.

[0051] In a specific implementation, the waterproof layer 40 composed of the coating layer 403, the solidification layer 402 and the protective layer 401 can block water from the outside when the cable is subjected to rainwater immersion, groundwater penetration or pipeline waterlogging, etc., protect the electrical performance of the insulated core, avoid electrical faults such as short circuit and leakage caused by moisture, thereby prolonging the service life of the cable and reducing maintenance and replacement costs.

[0052] In a specific implementation, the isolation layer 30 and the waterproof layer 40 cooperate with each other to form a multi-level waterproof system. The isolation layer can cope with slight water vapor erosion in the daily environment, while the waterproof layer plays a key role in the face of larger water volume or more severe wet conditions. Such design makes the waterproof performance of the cable more reliable and durable, and can adapt to different laying environments and use scenarios, whether it is outdoor overhead laying, underground direct burial or pipeline laying in buildings, it can effectively guarantee the waterproof performance of the cable, and ensure the stability and safety of power and signal transmission.

[0053] Among them, the main function of the isolation layer 30 and the waterproof layer 40 is waterproof, but to a certain extent, it also plays an auxiliary role in fireproof performance. The aluminum polyethylene composite tape of the isolation layer 30 has a certain high-temperature resistance of the aluminum layer, which can maintain the integrity of the structure for a short time to prevent the internal structure from being exposed to the flame too early. The polyvinyl chloride or polypropylene material of the waterproof layer 40 also has certain heat resistance and low-smoke halogen-free properties, which can reduce the generation of smoke and toxic gases when a fire occurs, and work together with the outer sheath to improve the fireproof performance of the cable, meet the strict requirements of cable fire safety in various buildings and industrial environments, and protect the safety of personnel and property and the normal operation of equipment.

[0054] In a specific implementation, a filling layer 20 is arranged between the insulated core 10 and the isolation layer 30 and between the insulated cores 10.

[0055] In a specific implementation, the filling layer 20 is a water-blocking rope, which has strong water absorption and water-blocking ability. When the cable is subjected to external water intrusion, the water-blocking rope can quickly absorb and lock water, preventing water from further penetrating into the key components such as the insulated core inside the cable. In the case of partial damage to the outer sheath 50 or the waterproof layer 40 or the isolation layer 30 of the cable, the water-blocking rope can also prevent water from spreading along the internal structure of the cable to a certain extent, forming an effective waterproof barrier to protect the insulation performance of the cable from the influence of water, thereby ensuring the stable transmission of power or signal and significantly prolonging the service life of the cable and reducing the risk of electrical faults caused by moisture. The water-blocking rope also plays a good buffering and supporting role. When the cable is subjected to mechanical stress such as extrusion, bending and stretching, the water-blocking rope can evenly distribute the stress to avoid stress concentration in a certain part and cause damage to the insulated core or deformation of the internal structure.

[0056] Other structure of the new high flame-retardant fireproof control cable is described in the embodiment, which is known in the art.

[0057] The above is only a preferred embodiment of the present application, and does not limit the present application in any form, so any modification, equivalent change and modification of the above embodiment according to the technical essence of the present application, which does not deviate from the technical solution content of the present application, still belongs to the scope of the technical solution of the present application.

Claims

1. A new type of high flame retardant fire resistant control cable, characterized in that, The cable comprises a plurality of insulated cores (10), an isolation layer (30), a waterproof layer (40) and an outer sheath (50) arranged from inside to outside. The waterproof layer (40) comprises a coating layer (403), a wrapping layer (402) and a protective layer (401).

2. The novel high-flame-retardant fireproof control cable according to claim 1, characterized in that: The insulated core (10) comprises a conductor (101), a shielding layer (102) and an insulation layer (103). The shielding layer (102) is wound on the conductor (101). The insulation layer (103) is a polyphosphazene elastomer material coated on the shielding layer (102).

3. The novel high-flame-retardant fireproof control cable according to claim 2, characterized in that: The shielding layer (102) is a metal mesh braid layer.

4. The novel high-flame-retardant fireproof control cable according to claim 1, characterized in that: The isolation layer (30) is an aluminum polyethylene composite tape.

5. The novel high-flame-retardant fireproof control cable according to claim 1, characterized in that: The outer sheath (50) is a low-smoke halogen-free flame-retardant polyolefin material.

6. The novel high-flame-retardant fireproof control cable according to claim 1, characterized in that: The protective layer (401) wraps the isolation layer (30), and the protective layer (401) is a polyvinyl chloride or polypropylene material; The wrapping layer (402) is arranged outside the protective layer (401), and the wrapping layer (402) is a polyester cloth; The coating layer (403) is arranged on the outermost side of the waterproof layer (40), and the coating layer (403) is a polyurethane material.

7. The novel high-flame-retardant fireproof control cable according to claim 1, characterized in that: A filling layer (20) is arranged between the insulated core (10) and the isolation layer (30) and between the insulated cores (10).

8. The novel high-flame-retardant fireproof control cable according to claim 7, characterized in that: The filling layer (20) is a water-blocking rope.

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