CN220731210U - Low smoke mineral insulated cable - Google Patents

Abstract

The utility model relates to a low-smoke mineral insulated cable which comprises a conductor, wherein a mineral composite insulating layer is wrapped outside the conductor, a metal layer is wrapped outside the mineral composite insulating layer, a fireproof isolation layer for flame retardation isolation is wrapped outside the metal layer, and a halogen-free low-smoke sheath is wrapped outside the fireproof isolation layer. The mineral composite insulating layer has good insulating effect, and has certain insulativity, so that oxygen can be insulated, the flame retardance of the cable is improved, the metal layer can seal the conductor and the mineral composite insulating layer, and the strength of the cable is improved. The fireproof isolation layer can further improve the flame retardance of the cable. The halogen-free low-smoke sheath has the performances of high temperature resistance, low smoke, flame retardance, environmental protection and the like, and avoids the pollution of the cable in the prior art to the environment in the combustion.

Description

Low smoke mineral insulated cable

Technical Field

The utility model relates to the technical field of cables, in particular to a low-smoke mineral insulated cable.

Background

With the development of the electric power, computer and building industry in China, the electricity consumption is increased, and the main function of the cable is to transmit electric power or information from one place to another place through wires, so that the cable plays a vital role in life and work.

However, the existing cable has a large number of defects, such as very poor flame retardant performance, and when the cable burns, a large amount of toxic smoke is emitted, so that the environment is seriously polluted, and even the body of staff is injured. Thus, for this current situation, a low smoke mineral insulated cable has been developed to meet the current practical use needs.

Disclosure of Invention

The utility model provides a low-smoke mineral insulated cable, which aims to solve the problems that the cable in the prior art is poor in flame retardant property and a large amount of toxic smoke and smoke can appear during combustion.

The utility model provides a low-smoke mineral insulated cable which comprises a conductor, wherein a mineral composite insulating layer is wrapped on the outer side of the conductor, a metal layer is wrapped on the outer side of the mineral composite insulating layer, a fireproof isolation layer for flame retardation isolation is wrapped on the outer side of the metal layer, and a halogen-free low-smoke sheath is wrapped on the outer side of the fireproof isolation layer.

In some embodiments, the mineral composite insulating layer comprises a ceramic silicone tape and a fire resistant mica tape;

the ceramic silica gel tape is wrapped on the outer side of the conductor, and the fire-resistant mica tape is wrapped on the outer side of the ceramic silica gel tape.

In some embodiments, the fire barrier layer includes an insulating layer and a fire barrier layer;

the isolating layer is wrapped on the outer side of the aluminum metal sleeve, and the fireproof layer is arranged on the outer side of the metal layer.

In some embodiments, a plurality of mounting blocks are uniformly arranged on the outer side of the isolation layer, a plurality of grooves are uniformly arranged on the inner side of the fireproof layer, the plurality of mounting blocks are in one-to-one correspondence with the plurality of grooves, and the mounting blocks are connected with the grooves in a jogged manner.

In some embodiments, the barrier layer is an XLPE spacer.

In some embodiments, a flame retardant tape is included;

the flame-retardant belt is arranged between the fireproof layer and the halogen-free low-smoke sheath.

In some embodiments, the metal layer is an aluminum metal sleeve.

In some embodiments, the halogen-free low smoke sheath has a thickness of 5mm or more.

The utility model has the beneficial effects that:

according to the utility model, the outer side of the conductor is wrapped by the mineral composite insulating layer, the insulating effect of the mineral composite insulating layer is good, oxygen can be isolated to a certain degree, the flame retardance of the cable is improved, the conductor and the mineral composite insulating layer can be sealed by the wrapping and the metal layer outside the mineral composite insulating layer, and the strength of the cable is improved. The fire-proof isolation layer arranged outside the metal layer can further improve the fire resistance of the cable. The halogen-free low-smoke sheath is further arranged outside the metal layer, and the halogen-free low-smoke sheath has the performances of high temperature resistance, low smoke, flame retardance, environmental protection and the like, so that the pollution of the cable in the prior art to the environment in the combustion is avoided.

Drawings

Fig. 1 is a schematic structural view of a low smoke mineral insulated cable of the present utility model.

110, conductors in the drawing; 120. a mineral composite insulating layer; 130. a metal layer; 140. a fire barrier layer; 141. an isolation layer; 142. a fire-blocking layer; 150. a halogen-free low smoke sheath; 160. a flame retardant tape; 170. a mounting block; 180. a groove.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Examples of the embodiments are illustrated in the accompanying drawings, wherein like or similar symbols indicate like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "top," "bottom," "inner," "outer," "axis," "circumferential," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience in describing the present utility model or simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," "engaged," "hinged," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Referring to fig. 1, a low smoke mineral insulated cable includes a conductor 110, a mineral composite insulating layer 120 is wrapped outside the conductor 110, a metal layer 130 is wrapped outside the mineral composite insulating layer 120, a fireproof isolation layer 140 for flame retardation isolation is wrapped outside the metal layer 130, and a halogen-free low smoke sheath 150 is wrapped outside the fireproof isolation layer 140.

Specifically, the conductor 110 is used for transmitting power or information, and the conductor 110 is a copper conductor 110 formed by twisting copper wires. The outer wall of the conductor 110 is wrapped with the mineral composite insulating layer 120, the mineral composite insulating layer 120 has excellent insulating effect, and has certain isolation property, so that oxygen can be isolated, and the flame retardance of the cable is improved. The metal layer 130 wraps the outer wall of the mineral composite insulating layer 120, and the metal layer 130 can seal the conductor 110 and the mineral composite insulating layer 120, so that the integrity of the cable is ensured, and the strength of the cable is improved. The metal layer 130 can well protect the conductor 110 in case of fire accident. The protective isolation layer 141 is wrapped on the outer wall of the metal layer 130, and the fireproof isolation layer 140 further improves the flame retardance of the cable, so that the practicability of the cable is further improved. The halogen-free low-smoke sheath 150 is wrapped on the outer wall of the metal layer 130, and the halogen-free low-smoke sheath 150 has the performances of high temperature resistance, low smoke, flame retardance, environmental protection and the like, so that the pollution of the cable in the prior art to the environment in the combustion is avoided. The halogen-free low smoke sheath 150 also has good corrosion resistance, and avoids the cable from being corroded in the long-time use process, so that the cable is broken. The service life of the cable is prolonged.

In some embodiments of the present utility model, the mineral composite insulating layer 120 comprises a ceramic silicone tape wrapped around the outside of the conductor 110 and a fire resistant mica tape wrapped around the outside of the ceramic silicone tape. The mineral composite insulating layer 120 has good insulating effect, and the ceramic silica gel mica composite tape layer can magnetize and crust under flame condition, then isolate oxygen, and prevent flame from entering the conductive wire core, thereby ensuring the line integrity.

In some embodiments of the present utility model, the fireproof isolation layer 140 includes an isolation layer 141 and a fireproof layer 142, the isolation layer 141 is wrapped on the outer side of the aluminum metal sleeve, the fireproof layer 142 is disposed on the outer side of the metal layer 130, the isolation layer 141 is made of high-density cross-linked polyethylene plastic and is made of XLPE isolation sleeve by extrusion. The fireproof layer 142 and the isolation layer 141 are integrally designed, so that the isolation performance and the flame retardance of the fireproof isolation layer 140 can be further improved, specifically, a plurality of mounting blocks 170 are uniformly arranged on the outer side of the isolation layer 141, a plurality of grooves 180 are uniformly formed in the inner side of the fireproof layer 142, the plurality of mounting blocks 170 are in one-to-one correspondence with the plurality of grooves 180, and the mounting blocks 170 are connected with the grooves 180 in a jogged mode, so that the fireproof layer 142 and the isolation layer 141 can be tightly connected.

In some embodiments of the present utility model, a flame retardant tape 160 is included, the flame retardant tape 160 being disposed between the flame retardant layer 142 and the halogen-free low smoke sheath 150, further improving the flame retardancy of the cable.

In some embodiments of the present utility model, the metal layer 130 is an aluminum metal jacket, so that the cable has good mechanical properties, corrosion resistance, and good sealing and electrical conductivity.

In some embodiments of the utility model, the halogen-free low smoke sheath 150 has a thickness of 5mm or more. The thickness of the halogen-free low-smoke sheath 150 is not less than 5mm at the thinnest part. The cable is ensured to have higher wear resistance, so that various safety accidents caused by the damage of the halogen-free low-smoke sheath 150 of the cable caused by the punctiform external force and the planar external force can be avoided.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "examples," "particular examples," "one particular embodiment," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The present utility model is not limited to the above preferred embodiments, and any person skilled in the art, within the scope of the present utility model, may apply to the present utility model, and equivalents and modifications thereof are intended to be included in the scope of the present utility model.

Claims (8)

1. The utility model provides a low smoke mineral substance insulated cable, its characterized in that includes the conductor, the conductor outside parcel has mineral composite insulating layer, mineral composite insulating layer outside parcel has the metal level, the metal level outside parcel has the fire prevention isolation layer that is used for fire-retardant isolation, the outside parcel of fire prevention isolation layer has the low smoke protection cover of halogen-free.

2. The mineral insulated cable of claim 1, wherein the mineral composite insulation layer comprises a ceramic silica tape and a fire resistant mica tape;

the ceramic silica gel tape is wrapped on the outer side of the conductor, and the fire-resistant mica tape is wrapped on the outer side of the ceramic silica gel tape.

3. The mineral insulated cable of claim 1, wherein the fire barrier layer comprises an insulation layer and a fire barrier layer;

the isolating layer is wrapped on the outer side of the metal layer, and the fireproof layer is arranged on the outer side of the metal layer.

4. The mineral insulated cable according to claim 3, wherein a plurality of installation blocks are uniformly arranged on the outer side of the isolation layer, a plurality of grooves are uniformly formed on the inner side of the fireproof layer, the installation blocks are in one-to-one correspondence with the grooves, and the installation blocks are connected with the grooves in a jogged manner.

5. A mineral insulated cable according to claim 3, wherein the insulation layer is an XLPE insulation sheath.

6. A mineral insulated cable according to claim 3, comprising a flame retardant tape;

the flame-retardant belt is arranged between the fireproof layer and the halogen-free low-smoke sheath.

7. The mineral insulated cable of claim 1, wherein the metal layer is an aluminum metal jacket.

8. The mineral insulated cable of claim 1, wherein the halogen-free low smoke jacket has a thickness of 5mm or more.