High-temperature-resistant low-smoke halogen-free fireproof cable

Abstract

The utility model discloses a high-temperature-resistant low-smoke halogen-free fireproof cable, which comprises a cable core, the cable core is composed of a wire core, a filling layer and a second insulating layer, a shielding layer is arranged outside the second insulating layer, a composite high-temperature-resistant layer is arranged outside the shielding layer, a composite fireproof layer is arranged outside the composite high-temperature-resistant layer, and a fireproof layer is arranged outside the composite fireproof layer. The composite high-temperature-resistant layer is composed of a high-temperature-resistant outer layer, a high-temperature-resistant reinforcing layer and a high-temperature-resistant inner layer, the high-temperature-resistant inner layer is arranged outside the shielding layer in a wrapping mode, the high-temperature-resistant reinforcing layer is arranged outside the high-temperature-resistant inner layer in a wrapping mode, and the high-temperature-resistant outer layer is arranged outside the high-temperature-resistant reinforcing layer in an extruded mode The composite high-temperature-resistant layer and other structures solve the problems that the cable is easily interfered by high temperature and the protection effect of the cable is not good enough.

Description

TECHNICAL FIELD

[0001] The utility model relates to fireproof cable technical field, concretely is a kind of high-temperature-resistant low-smoke halogen-free fireproof cable. BACKGROUND

[0002] Fireproof cable is a kind of cable with special fireproof performance, can keep the basic operation of power system under fire condition, slow down the spread of fire, reduce fire loss.Fireproof cable is usually composed of conductor, insulating layer, fire-retardant layer, sheath and other parts.Fireproof cable is widely used in high-rise buildings, petrochemical industry, aerospace, steel metallurgy and other occasions due to its excellent fireproof performance.

[0003] For example, the Chinese patent "A fireproof cable" with announcement number CN220456129U includes a core, the core is provided with two mutual twists;Filler layer, the filler layer is wrapped outside the two cores;Sheath, the sheath is sleeved outside the filler layer;Buffer assembly, the buffer assembly is arranged between the filler layer and the sheath, the core includes: conductor core wire, the core is provided with conductor core wire;Fireproof layer, the outer side of the conductor core wire is wrapped with fireproof layer;Insulating layer, the outer side of the fireproof layer is wrapped with insulating layer, the buffer assembly includes: ball groove, the ball groove is provided with a plurality of and circumferentially distributed on the filler layer;Ball, the ball is installed on the ball groove;Elastic column, the elastic column is fixedly connected with the ball at one end, and is fixedly connected with the sheath at the other end, the gap between the sheath, buffer assembly and filler layer is filled with hessian yarn filler, the material used in the fireproof layer is synthetic resin film, the insulating layer is ceramic silicone rubber belt, the conductor core wire is twisted by a plurality of soft copper wires, the filler layer is filled with rock wool fiber, and the sheath is made of polyethylene material.

[0004] The above prior art can realize the fireproof of cable, but in actual use, on the one hand, the cable is easy to be disturbed by high temperature, and after the fire, the high temperature of flame burning is transmitted to the cable core, so that the electrical performance and mechanical performance of the cable core are reduced, thereby affecting the performance of the cable, on the other hand, the protection effect of the cable is not good enough, and usually, after the cable encounters fire, a certain amount of smoke is generated on the surface of the cable, thereby increasing the harmfulness of toxic smoke to personnel, therefore, it does not meet the existing demand, and for this, we propose a high-temperature-resistant low-smoke halogen-free fireproof cable. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of high-temperature-resistant low-smoke halogen-free fireproof cable to solve the problems that cable is easy to be disturbed by high temperature and the protection effect of cable is not good enough in the above background.

[0006] In order to achieve the above object, the utility model provides the following technical scheme: a kind of high-temperature-resistant low-smoke halogen-free fireproof cable, including cable core, the cable core is composed of wire core, filling layer, second insulating layer, the outside of second insulating layer is provided with shielding layer, the outside of shielding layer is provided with composite high-temperature-resistant layer, the outside of composite high-temperature-resistant layer is provided with composite fireproof layer.

[0007] Preferably, the composite high-temperature-resistant layer is composed of high-temperature-resistant outer layer, high-temperature-resistant reinforcing layer and high-temperature-resistant inner layer, the high-temperature-resistant inner layer is wrapped and arranged outside the shielding layer, the high-temperature-resistant reinforcing layer is wrapped and arranged outside the high-temperature-resistant inner layer, and the high-temperature-resistant outer layer is extruded and arranged outside the high-temperature-resistant reinforcing layer.

[0008] Preferably, the composite fireproof layer is composed of fireproof outer layer and fireproof base layer, the fireproof base layer is arranged outside the high-temperature-resistant outer layer, and the fireproof outer layer is extruded and arranged outside the fireproof base layer.

[0009] Preferably, the wire core is composed of conductor and first insulating layer, the conductor is twisted by multiple copper wires, and the first insulating layer is arranged outside the conductor.

[0010] Preferably, the filling layer is arranged in the gap between the wire core, the second insulating layer and the cable core.

[0011] Preferably, the first insulating layer and the second insulating layer are both processed by tetrafluoroethylene-perfluoroalkoxy vinyl ether copolymer.

[0012] Preferably, the shielding layer is made of conductive PVC material.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] 1、The utility model discloses a composite high-temperature-resistant layer, which can improve the heat insulation performance of the cable core, the high-temperature-resistant outer layer can effectively prevent heat transfer to the inside of the cable core, thereby keeping the temperature inside the cable core within a safe range, enhancing the reliability of the cable, the high-temperature-resistant reinforcing layer can reduce flammability and slow down the spread speed of fire, and can quickly self-extinguish after the fire source is removed, while being able to withstand large mechanical stress and friction, reducing cable failure caused by physical damage, and the high-temperature-resistant inner layer can effectively block oxygen supply, thereby reducing the burning speed of the cable.

[0015] 2、The utility model discloses a composite fireproof layer can improve the protection performance of cable surface, set up the fireproof outer layer, can reduce the smoke generated when cable burns, and does not contain halogen and other toxic gases, thereby reduce the harm of smoke and toxic gas to personnel when the fire, the fireproof outer layer has good weather resistance and corrosion resistance simultaneously, can protect the cable from environmental factors, the fireproof base layer set up has excellent fire -resistant oxygen -resistant effect, and the fireproof base layer will be ceramicized after burning, forms a solid shell, prevents the flame combustion operation cable core.

[0016] 3、The utility model discloses a filling layer can improve the stability of cable core structure, and the filling layer can fill the gap in the cable core, keeps the roundness and structural stability of cable core, helps to improve the tensile and compression performance of cable, prolongs the service life of cable, and the filling layer adopts special flame -retardant formula simultaneously, can form the dense carbonization layer when the fire occurs, effectively insulates oxygen and heat source, thereby prevents the further spread of fire. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the overall structure perspective drawing of the utility model;

[0018] Figure 2 It is the internal structure section view of the utility model;

[0019] Figure 3 It is the composite high temperature resistant layer internal structure close -up of the utility model;

[0020] Figure 4 It is the composite fireproof layer internal structure close -up of the utility model.

[0021] In the drawing: 1, cable core;2, wire core;201, conductor;202, first insulating layer;3, filling layer;4, second insulating layer;5, shielding layer;6, composite high temperature resistant layer;601, high temperature resistant outer layer;602, high temperature resistant reinforced layer;603, high temperature resistant inner layer;7, composite fireproof layer;701, fireproof outer layer;702, fireproof base layer. DETAILED DESCRIPTION

[0022] The technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0023] Please refer to Figures 1-4The utility model provides an embodiment: a kind of high-temperature-resistant low-smoke halogen-free fireproof cable, including cable core 1, cable core 1 is by wire core 2, filling layer 3, second insulating layer 4 is composed, the outside of second insulating layer 4 is provided with shielding layer 5, the outside of shielding layer 5 is provided with composite high-temperature-resistant layer 6, the outside of composite high-temperature-resistant layer 6 is provided with composite fireproof layer 7, wire core 2 is by conductor 201, first insulating layer 202 is composed, conductor 201 is by multiple copper wire stranding, first insulating layer 202 is arranged at the outside of conductor 201, first insulating layer 202 and second insulating layer 4 are all made of tetrafluoroethylene-perfluoroalkoxy vinyl ether copolymer processing, shielding layer 5 uses conductive PVC material, first insulating layer 202 is extruded and wrapped and arranged at the outside of conductor 201, second insulating layer 4 is extruded and wrapped and arranged at the outside of wire core 2.

[0024] Please refer to Figure 2 And Figure 3 Composite high-temperature-resistant layer 6 is by high-temperature-resistant outer layer 601, high-temperature-resistant reinforcing layer 602, high-temperature-resistant inner layer 603, high-temperature-resistant inner layer 603 is wrapped and arranged at the outside of shielding layer 5, high-temperature-resistant reinforcing layer 602 is wrapped and arranged at the outside of high-temperature-resistant inner layer 603, high-temperature-resistant outer layer 601 is extruded and wrapped and arranged at the outside of high-temperature-resistant reinforcing layer 602, wherein high-temperature-resistant outer layer 601 uses polyether ether ketone material, high-temperature-resistant reinforcing layer 602 uses high flame-retardant rubber-coated tape, high-temperature-resistant inner layer 603 uses alkali-free glass fiber rope, to improve the high-temperature-resistant performance of cable core 1 by composite high-temperature-resistant layer 6.

[0025] Please refer to Figure 2 And Figure 4 Composite fireproof layer 7 is by fireproof outer layer 701, fireproof base layer 702, fireproof base layer 702 is arranged at the outside of high-temperature-resistant outer layer 601, fireproof outer layer 701 is extruded and wrapped and arranged at the outside of fireproof base layer 702, fireproof outer layer 701 uses low-smoke halogen-free elastomer, fireproof base layer 702 uses mineral fireproof mud, mineral fireproof mud includes magnesium hydroxide, aluminium hydroxide, sodium silicate and chlorinated paraffin, to improve the protection performance of cable by composite fireproof layer 7.

[0026] Please refer to Figure 2 Filling layer 3 is arranged in the gap between wire core 2, second insulating layer 4 and cable core 1, filling layer 3 uses halogen-free high flame-retardant rope, to improve the stability of cable core 1 by filling layer 3.

[0027] It is apparent for a person skilled in the art that the present application is not restricted to the details of the above exemplary embodiments, but that it can be implemented in other concrete forms without departing from the spirit or the essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary only, and not limiting, the scope of the present application being defined by the appended claims rather than the above description, and all changes coming within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims concerned.

Claims

1. A high temperature resistant, low smoke, halogen free fire resistant cable comprising a cable core (1) characterised in that: The cable core (1) is composed of a wire core (2), a filling layer (3), a second insulation layer (4), an outer shielding layer (5), a composite high-temperature resistant layer (6), and a composite fireproof layer (7).

2. The high temperature resistant, low smoke, halogen-free, fire resistant cable of claim 1, wherein: The composite high-temperature resistant layer (6) is composed of a high-temperature resistant outer layer (601), a high-temperature resistant reinforcing layer (602), and a high-temperature resistant inner layer (603).

3. A high temperature resistant, low smoke, halogen-free fire resistant cable according to claim 2, characterized in that: The composite fireproof layer (7) is composed of a fireproof outer layer (701) and a fireproof base layer (702).

4. The high temperature resistant, low smoke, halogen-free, fire resistant cable of claim 3, wherein: The wire core (2) is composed of a conductor (201) and a first insulation layer (202).

5. The high temperature resistant, low smoke, halogen-free, fire resistant cable of claim 4, wherein: The filling layer (3) is arranged in the gap between the wire core (2), the second insulation layer (4), and the cable core (1).

6. A high temperature resistant, low smoke, halogen-free, fire resistant cable according to claim 5, characterized in that: The first insulation layer (202) and the second insulation layer (4) are both made of tetrafluoroethylene-perfluoroalkoxy vinyl ether copolymer.

7. A high temperature resistant, low smoke, halogen-free, fire resistant cable according to claim 6, characterized in that: The shielding layer (5) is made of conductive PVC material.

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