CN212115715U - Heating cable - Google Patents

Abstract

The utility model relates to the technical field of cables, a heating cable is disclosed, including conductor sinle silk, first mineral substance insulating layer, tensile layer and outer jacket, first mineral substance insulating layer wrap up in the outside of conductor sinle silk, the tensile layer is aramid yarn transposition layer, the tensile layer wrap up in the outside of first mineral substance insulating layer, the outer jacket wrap up in the outside of tensile layer. The utility model discloses a set up the tensile layer, can improve heating cable's tensile ability for heating cable can bear the pulling force, and heating cable easily lays, reduces heating cable's fracture phenomenon when the bending, reduces the harm that heating cable received.

Description

Heating cable

Technical Field

The utility model relates to the technical field of cables, especially, relate to a heating cable.

Background

The heating cable has wide application prospect, and is widely applied to heating of large-scale public places such as houses, businesses, apartments, hotels, markets and the like at present. But is prone to fire due to the high height of the heating cable. The fireproof heating cable arranged for preventing fire has weak tensile capability, is easy to damage due to the self gravity and the tensile force generated by falling of a heavy object, is not easy to lay, and is easy to crack particularly at the position with smaller bending radius.

SUMMERY OF THE UTILITY MODEL

The utility model aims at: provided is a heating cable which can withstand tensile force, can be easily laid, and can reduce damage to the cable.

In order to achieve the above object, the utility model provides a heating cable, including conductor sinle silk, first mineral substance insulating layer, tensile layer and outer jacket, first mineral substance insulating layer wrap up in the outside of conductor sinle silk, the tensile layer is aramid yarn transposition layer, tensile layer wrap up in the outside of first mineral substance insulating layer, the outer jacket wrap up in the outside of tensile layer.

Optionally, the cable further comprises a shielding layer, the shielding layer wraps the outside of the first mineral insulating layer, and the tensile layer wraps the outside of the shielding layer.

Optionally, still include the second mineral substance insulating layer, the second mineral substance insulating layer parcel in the outside of tensile layer, the outer jacket parcel in the outside of second mineral substance insulating layer.

Optionally, the cable further comprises a metal layer, the metal layer wraps the outside of the second mineral substance insulating layer, and the outer protective layer wraps the outside of the metal layer.

Optionally, the thickness of the second mineral substance insulating layer is 1.0mm to 3.0 mm.

Optionally, the thickness of the metal layer is 0.5mm to 1.0 mm.

Optionally, the temperature sensing and color changing device further comprises a temperature sensing and color changing layer, and the temperature sensing and color changing layer is wrapped outside the outer protective layer.

Optionally, the thickness of the thermochromic layer is 0.2mm to 1.0 mm.

Optionally, the thickness of the first mineral substance insulating layer is 0.5-1.5 mm.

Optionally, the thickness of the outer protective layer is 1.2 mm-3.0 mm.

The embodiment of the utility model provides a heating cable, compared with the prior art, its beneficial effect lies in:

the utility model discloses heating cable, including conductor sinle silk, first mineral substance insulating layer, tensile layer and outer jacket, first mineral substance insulating layer wraps up in the outside of conductor sinle silk, and the tensile layer is aramid yarn transposition layer, and the tensile layer wraps up in the outside of first mineral substance insulating layer, and the outer jacket wraps up in the outside of tensile layer. Through setting up the tensile layer, can improve heating cable's tensile ability for heating cable can bear the pulling force, and heating cable easily lays, reduces heating cable's fracture phenomenon when the bending, reduces the harm that heating cable received.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

In the figure, 1, a conductor core; 2. a first mineral insulating layer; 3. a tensile layer; 4. an outer jacket; 5. a shielding layer; 6. a second mineral insulating layer; 7. a metal layer; 8. a temperature-sensitive color-changing layer.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element 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 invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1, the heating cable according to the preferred embodiment of the present invention includes a conductor core 1, a first mineral insulating layer 2, a tensile layer 3 and an outer sheath 4, wherein the first mineral insulating layer 2 wraps the conductor core 1, the tensile layer 3 is an aramid yarn twisted layer, the tensile layer 3 wraps the first mineral insulating layer 2, and the outer sheath 4 wraps the tensile layer 3. The conductor wire core 1 is oxygen-free copper of a heating conductor, and the structure of the conductor wire core meets the 2 nd or 5 th conductor in GB/T3956-. The material of first mineral substance insulating layer 2 is the insulating material of the closely knit packing of magnesia powder, and the magnesia powder can't be on fire, can improve better fire prevention effect from this, can also provide higher operating temperature for conductor sinle silk 1, and its self structure also has sturdy and durable, can bear external force extrusion, striking, beat long service life's characteristics. The thickness of the first mineral substance insulating layer 2 is 0.5-1.5 mm. Outer jacket 4 is made by the crowded package of the fire-retardant polyolefin of steamed low cigarette of nothing, can effectively prevent the thermal quick giving off of heating cable to make heating cable temperature even on the circumference, can also avoid personnel direct contact metal level 7 of high temperature and the scald that causes. The thickness of the outer protective layer 4 is 1.2 mm-3.0 mm. The tensile ability of heating cable can be improved to the setting of tensile layer 3 for heating cable can bear the pulling force, and heating cable easily lays, reduces heating cable's fracture phenomenon when the bending, reduces the harm that heating cable received.

In this embodiment, the heating cable further includes a shielding layer 5, the shielding layer 5 is wrapped outside the first mineral insulation layer 2, and the tensile layer 3 is wrapped outside the shielding layer 5. The shielding layer 5 is made by winding a copper strip, wherein the thickness of the copper strip is 0.05 mm-0.15 mm, the winding overlapping rate is not less than 15%, or the shielding layer 5 is made by weaving a tinned round copper wire, wherein the diameter of the round copper wire is 0.10 mm-0.30 mm, and the weaving density is not less than 80%. The shielding layer 5 can reduce the influence of electromagnetic waves generated by the heating cable on nearby people, equipment and environment.

In addition, heating cable still includes second mineral substance insulating layer 6, and second mineral substance insulating layer 6 wraps up in the outside of tensile layer 3, and outer jacket 4 wraps up in the outside of second mineral substance insulating layer 6. The material of second mineral substance insulating layer 6 is the same with first mineral substance insulating layer 2, and insulating properties can be strengthened in the setting of second mineral substance insulating layer 6. The thickness of the second mineral substance insulating layer 6 is 1.0 mm-3.0 mm. The metal layer 7 is wrapped outside the second mineral substance insulating layer 6, and the outer protection layer 4 is wrapped outside the metal layer 7. The metal layer 7 is made of copper strip interlocking armor, and the thickness is 0.5 mm-1.0 mm. The metal layer 7 has the effect of transmitting the fault current of the heating cable and the grounding effect, so that the safety of the heating cable and the safety of the operating environment are realized, the fireproof performance can be improved, and meanwhile, the effect of facilitating the bending of the heating cable is achieved. The second mineral insulation layer 6, can also function as a buffer pad for the metal layer 7.

The heating cable that this embodiment provided still includes temperature sensing discoloration layer 8, and temperature sensing discoloration layer 8 wraps up in the outside of outer jacket 4. The temperature-sensitive discoloration protective layer is made of 90 parts of polyvinyl chloride resin, 1.5-2 parts of temperature-sensitive discoloration powder, 20-35 parts of octyl dodecyl phthalate, 15-35 parts of octyl undecyl phthalate, 0.5-4.5 parts of tribasic lead sulfate, 0.5-2.5 parts of dibasic lead sulfate, 1.5-2.0 parts of barium stearate, 0.1-0.5 part of charge compensation agent, 3-10 parts of filler and 0.3-0.5 part of diphenol propane (bisphenol A), and the preparation process adopts a general cable material mixing preparation process. The thickness of the temperature-sensitive color-changing layer 8 is 0.2 mm-1.0 mm. Through setting up temperature sensing discoloration layer 8, when heating cable power overload or trouble operation to when leading to the electric wire high temperature, the colour of temperature sensing discoloration sheath can change, in order this to remind the user in time to stop using or change more powerful wiring board, prevent to take place that electric fire or cause personal safety.

The utility model discloses a working process does: the heating cable is internally provided with the tensile layer 3, and when the heating cable needs to be bent or needs to bear tensile force, the tensile layer 3 can improve the tensile capacity of the heating cable.

To sum up, the embodiment of the utility model provides a heating cable, it can improve heating cable's tensile ability through setting up tensile layer 3 for heating cable can bear the pulling force, and heating cable easily lays, reduces heating cable's fracture phenomenon when the bending, reduces the harm that heating cable received.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.

Claims (10)

1. The utility model provides a heating cable, its characterized in that, includes conductor sinle silk, first mineral substance insulating layer, tensile layer and outer jacket, first mineral substance insulating layer wrap up in the outside of conductor sinle silk, the tensile layer is aramid yarn transposition layer, tensile layer wrap up in the outside of first mineral substance insulating layer, the outer jacket wrap up in the outside of tensile layer.

2. The heating cable of claim 1, further comprising a shield layer surrounding the first mineral insulation layer, the tensile layer surrounding the shield layer.

3. The heating cable of claim 2, further comprising a second mineral insulation layer, wherein the second mineral insulation layer is wrapped around the tensile layer, and wherein the outer jacket is wrapped around the second mineral insulation layer.

4. A heating cable according to claim 3, further comprising a metal layer wrapped around the exterior of the second mineral insulation layer, the outer sheath being wrapped around the exterior of the metal layer.

5. A heating cable according to claim 3, characterized in that the thickness of the second mineral insulation layer is between 1.0mm and 3.0 mm.

6. A heating cable according to claim 4, characterized in that the thickness of the metallic layer is between 0.5mm and 1.0 mm.

7. The heating cable of claim 1, further comprising a thermochromic layer wrapped around an exterior of the outer jacket.

8. A heating cable according to claim 7, wherein the thermochromic layer has a thickness of 0.2mm to 1.0 mm.

9. A heating cable according to claim 1, wherein the thickness of the first mineral insulation layer is 0.5-1.5 mm.

10. The heating cable of claim 1, wherein the outer jacket has a thickness of 1.2mm to 3.0 mm.

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