Super-soft mineral insulated fire-resistant cable

Abstract

The utility model discloses a super-soft mineral insulated fire-resistant cable, which comprises a plurality of stranded insulated single wires, and soft copper wire conductors are arranged in the insulated single wires. A plurality of filling cores are uniformly distributed on the peripheries of the plurality of insulating single wires; and a fireproof layer, an isolating layer, a first shielding layer, a second shielding layer, an inner sheath, a tensile sleeve and an outer sheath are sequentially arranged on the peripheries of the plurality of insulating single wires and the plurality of filling cores from inside to outside. The cable provided by the utility model is good in flexibility, can be applied in various use environments, is good in fireproof performance, ensures the transmission performance of the cable in a severe environment, and effectively improves the performance of the cable.

Description

TECHNICAL FIELD

[0001] The utility model relates to cable technical field especially relates to a super-soft mineral insulation fire -resistant cable. BACKGROUND

[0002] The mineral insulation cable is used for the connection of various explosion -proof equipment and devices in the place with explosion danger. In recent years, the requirement of mineral insulation equipment is more and more strict, and the mineral insulation cable is required to have better fire -resistant performance in the process of fire, to ensure transmission performance in harsh environment, and the softness of the cable is required to be higher in different environments. With the equipment renewal, the application environment is added, the softness and fire -resistant performance of ordinary flexible mineral insulation cable cannot be considered, and the performance requirement of mineral insulation cable to application environment is higher and higher. SUMMARY

[0003] In view of the above defects or deficiencies in the prior art, it is expected to provide a super-soft mineral insulation fire -resistant cable, which has good softness, meets the application of the cable in various application environments, has good fire -resistant performance, ensures the transmission performance of the cable in harsh environment, and effectively improves the performance of the cable.

[0004] The utility model provides a super-soft mineral insulation fire -resistant cable, including the insulated single wire of many strands, the soft copper wire conductor is arranged in the insulated single wire, the outer periphery of many insulated single wires is evenly distributed with a plurality of filling core, the outer periphery of many insulated single wires and many filling cores is sequentially provided with fire -resistant layer, isolation layer, first shielding layer, second shielding layer, inner sheath, tensile sleeve and outer sheath from inside to outside,

[0005] The fire -resistant layer adopts magnesium hydroxide fire -resistant material and is made, the isolation layer adopts ceramic polyolefin fire -resistant material and is made, the first shielding layer is formed by polyester aluminum composite film and is wrapped, the second shielding layer is formed by soft copper wire core and is woven, the inner sheath is made of soft aluminum material, the tensile sleeve is formed by high -temperature resistant aramid synthetic fiber and is woven, and the outer sheath is made of flame -retardant polyolefin material.

[0006] Further, the insulated single wire includes a soft copper wire conductor, a mineral mica tape wrapped around the outer side of the soft copper wire conductor, and a ceramicized silicone rubber tape wrapped around the outer side of the mineral mica tape.

[0007] Further, the insulated single wire includes 7-9 wires, and the filling core includes 4-6 wires.

[0008] Further, the filling core is a high-strength galvanized steel wire.

[0009] Compared with the prior art, the utility model has the beneficial effects that:

[0010] The cable adopts soft copper wire conductor, has high conductivity, can reduce interference, guarantees signal transmission of the cable, is twisted by multiple insulated single wires, has good conductor roundness, high relative softness and is easy to weld.

[0011] The fireproof layer is made of magnesium hydroxide fireproof material, has excellent fireproof and anti-radiation performance, reduces the temperature of the burned cable, and the residual material is densely wrapped on the insulated wire core, so that the wire core cannot participate in the thermal oxidation reaction, the fire is self-extinguished instantly, and the carbonization standard of the cable is reduced to below 1.0m.

[0012] The isolation layer is made of ceramic polyolefin fireproof material, meets the requirements of fireproof and heat insulation, guarantees the softness of the cable through porcelainization, and the cable is safer.

[0013] The first shielding layer is formed by winding a polyester aluminum composite film, and the second shielding layer is formed by weaving a soft copper wire core, so that external interference can be effectively reduced, and the anti-radiation performance is excellent.

[0014] The inner sheath is made of soft aluminum material, the outer sheath is made of flame-retardant polyolefin material, has good mechanical environmental performance and certain flame-retardant effect, will not cause secondary injury to people after burning, has excellent flame-retardant performance, the aluminum inner sheath is soft, and the cable is more convenient to lay.

[0015] The tensile sleeve is woven by high-temperature-resistant aramid synthetic fiber, is not only light but also soft, can protect the cable from damage, and makes up for the poor tensile resistance of the soft cable, and can resist external force impact while being soft.

[0016] The cable has good insulation performance, anti-radiation, explosion-proof and super flame-retardant property, has considerable overload compared with other cables of the same type, has long-term stability, can guarantee the transmission performance of the cable in an environment prone to fire, has good softness, meets the application of the cable in various use environments, has good fireproof property, ensures the transmission performance of the cable in harsh environments, and effectively improves the performance of the cable.

[0017] It should be understood that the content described in the utility model content part is not intended to limit the key or important features of the embodiments of the utility model, nor is it intended to limit the scope of the utility model. Other features of the utility model will become apparent through the following description. BRIEF DESCRIPTION OF DRAWINGS

[0018] Other features, objects and advantages of the utility model will become more apparent by reading the following detailed description of the non-limiting embodiments made with reference to the accompanying drawings:

[0019] Fig. 1 It is a structural schematic view of the super-soft mineral insulated fireproof cable.

[0020] Fig. 2 Structure diagram of the insulated single wire.

[0021] Reference numerals in the drawing: 1, insulated single wire; 2, filling core; 3, fireproof layer; 4, isolation layer; 5, first shielding layer; 6, second shielding layer; 7, inner sheath; 8, tensile sleeve; 9, outer sheath;

[0022] 11, soft copper wire conductor; 12, mineral mica tape; 13, ceramicized silicone rubber tape. DETAILED DESCRIPTION

[0023] The utility model will be further explained in detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the related utility model, and are not limited to the utility model. In addition, it should be noted that only the parts related to the utility model are shown in the drawings for ease of description.

[0024] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict. The utility model will be explained in detail below in combination with the drawings and embodiments.

[0025] Please refer to Figs. 1-2 The embodiment of the utility model provides a kind of super-soft mineral insulation fire-resistant cable, including multiple insulated single wires 1 of stranding, and soft copper wire conductor 11 is arranged in insulated single wire 1;The outer periphery of multiple insulated single wires 1 is evenly distributed with several filling cores 2;The outer periphery of multiple insulated single wires 1 and multiple filling cores 2 are sequentially provided with fireproof layer 3, isolation layer 4, first shielding layer 5, second shielding layer 6, inner sheath 7, tensile sleeve 8 and outer sheath 9 from inside to outside;

[0026] Fireproof layer 3 is made of magnesium hydroxide refractory material, isolation layer 4 is made of ceramic polyolefin fireproof material, first shielding layer 5 is formed by wrapping polyester aluminum composite film, second shielding layer 6 is formed by weaving soft copper wire core, inner sheath 7 is made of soft aluminum material, tensile sleeve 8 is formed by weaving high-temperature-resistant aramid synthetic fiber, and outer sheath 9 is made of flame-retardant polyolefin material.

[0027] In the embodiment, the insulated single wire 1 is arranged reasonably in the innermost layer and is stranded with a certain lay. The insulated single wire 1 adopts a soft copper wire conductor 11, which improves the softness of the cable core. The insulated single wire 1 is protected by the fireproof layer 3 made of magnesium hydroxide fireproof material and the isolation layer 4 made of ceramic polyolefin fireproof material. The magnesium hydroxide fireproof material is converted into oxide and water after being heated, which perfectly blocks the fire source and heat outside. In combination with the ceramic polyolefin fireproof material, the two ensure excellent fireproof performance of the cable interior and ensure that the transmission performance such as cable attenuation and capacitance is not affected. The isolation layer 4 is provided with the first shielding layer 5 and the second shielding layer 6, which ensures the shielding performance of the cable and further ensures the transmission performance of the cable.

[0028] The cable of the present application has excellent softness on the basis of meeting the high temperature test, uses a soft aluminum inner sheath 7, a soft high-temperature-resistant tensile layer 8 and a soft outer sheath 9, ensures the bending installation and use of the cable, and has excellent performance in response to the use environment, which ensures that the cable has excellent fireproof, explosion-proof, radiation-proof and super flame-retardant properties under the conditions of steam, gas and flame.

[0029] In a preferred embodiment, as shown in Fig. 2 the insulated single wire 1 includes a soft copper wire conductor 11, a mineral mica tape 12 wrapped outside the soft copper wire conductor 11 and a ceramicized silicone rubber tape 13 wrapped outside the mineral mica tape 12.

[0030] In the embodiment, the insulation layer of the insulated single wire 1 is wrapped by the mineral mica tape 12 and the ceramicized silicone rubber tape 13, which has good electrical insulation and high temperature resistance. The ceramicized silicone rubber tape 13 has excellent performance and can withstand 3 hours of burning without breakdown under the condition of 1000V voltage at 1000℃ high temperature, which ensures the data transmission performance of the cable.

[0031] The ceramicized silicone rubber tape 13 is soft and elastic, which makes the bending performance of the entire cable better, completely meets the installation requirements, and the hard shell of the ceramicization also plays a better protection role in the case of fire. The combination of the mineral mica tape 12 and the ceramicized silicone rubber tape 13 achieves the purpose of improving the softness and fireproof ability of the cable core.

[0032] In a preferred embodiment, as shown in Fig. 1 the insulated single wire 1 is provided with 7-9 wires, which meets the demand of cable data transmission; the filler 2 is provided with 4-6 wires, which ensures the tensile strength of the cable.

[0033] In a preferred embodiment, the filler 2 is a high-strength galvanized steel wire, which has high tensile strength and can support the soft cable.

[0034] In the description of the application, the terms "one embodiment", "some embodiments", "an embodiment", "one specific embodiment", "some specific embodiments", and the like, can mean the same or similar thing, i.e., one or more embodiments or examples. By way of illustration, all of the above terms, i.e., "one embodiment", "some embodiments", "an embodiment", "one specific embodiment", "some specific embodiments", and the like, can mean one implementation so that there can be a plurality of embodiments that are the same or similar in some way. In other words, the terms "one embodiment", "some embodiments", "an embodiment", "one specific embodiment", "some specific embodiments", and the like, can mean one or more embodiments or examples, and the like, unless otherwise noted. The terms "first", "second", "third", "fourth", "fifth", "sixth", and the like, do not necessarily indicate that the components so described are

[0035] The above description is only preferred embodiments of the present application and is not intended to limit the present application. The present application can be variously changed and modified by those skilled in the art. Any modification, equivalent replacement, improvement, etc., made within the spirit and principle of the present application should be included in the scope of the present application.

Claims

1. An ultra-flexible mineral-insulated fire resistant cable, characterized in that, The application relates to a kind of insulated single-wire (1) comprising a plurality of twisted insulated single-wires (1), wherein a soft copper wire conductor (11) is arranged in the insulated single-wire (1); a plurality of fillers (2) are arranged on the outer periphery of the insulated single-wire (1); and the outer periphery of the plurality of insulated single-wires (1) and the plurality of fillers (2) are sequentially arranged from inside to outside with a fireproof layer (3), an isolation layer (4), a first shielding layer (5), a second shielding layer (6), an inner sheath (7), a tensile sleeve (8) and an outer sheath (9); The fireproof layer (3) is made of magnesium hydroxide fireproof material, the isolation layer (4) is made of ceramic polyolefin fireproof material, the first shielding layer (5) is wrapped by polyester aluminum composite film, the second shielding layer (6) is woven by soft copper wire core, the inner sheath (7) is made of soft aluminum material, the tensile sleeve (8) is woven by high-temperature-resistant aramid synthetic fiber, and the outer sheath (9) is made of flame-retardant polyolefin material.

2. The super-flexible mineral-insulated fire-resistant cable according to claim 1, characterized in that, The insulated single-wire (1) comprises a soft copper wire conductor (11), a mineral mica tape (12) wrapped outside the soft copper wire conductor (11), and a ceramicized silicone rubber tape (13) wrapped outside the mineral mica tape (12).

3. The super-flexible mineral-insulated fire-resistant cable of claim 1, wherein, The insulated single-wire (1) is provided with 7-9 insulated single-wires (1), and the filler (2) is provided with 4-6 fillers (2).

4. The super-flexible mineral-insulated fire-resistant cable of claim 1, wherein, The filler (2) is a high-strength galvanized steel wire.

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