CN218585665U - Heating cable - Google Patents
Heating cable Download PDFInfo
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- CN218585665U CN218585665U CN202223016467.4U CN202223016467U CN218585665U CN 218585665 U CN218585665 U CN 218585665U CN 202223016467 U CN202223016467 U CN 202223016467U CN 218585665 U CN218585665 U CN 218585665U
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Abstract
The utility model belongs to the technical field of cables, in particular to a heating cable, which comprises a heating conductor layer, an insulating layer, a protective layer and an outer sleeve layer from inside to outside in sequence, wherein the insulating layer comprises an inner insulating layer and an outer insulating layer, the inner insulating layer is an inorganic metal hydrate layer, and the outer insulating layer is a mineral substance layer; the protective layers are a first protective layer and a second protective layer, the first protective layer is a high silica fire-proof layer, and the second protective layer is a carbon fiber composite layer; the outer sleeve layer is of a wave structure. The utility model has good insulation and shielding effect, high strength, good heat transfer performance and high heat utilization rate; the safety performance is good, the rate of endurance is high, long service life.
Description
Technical Field
The utility model belongs to the technical field of the cable, concretely relates to heating cable.
Background
The heating cable is used for heating systems such as indoor heating systems, pipeline heat tracing systems, outdoor ice and snow melting systems, roof and roof gutter ice and snow melting systems, factory buildings, machine warehouses and the like, and heating systems applied to football fields, lawns, flower beds and the like.
At present, the structure of a common heating cable mainly comprises a heating wire, single-layer insulation and single-layer shielding, and the common heating cable is poor in insulation and shielding effects, low in strength, poor in heat transfer performance, slow in temperature rise and low in heat utilization rate; the leakage protection degree is low, the durability is low, and the service life is short.
In view of this, the present invention is proposed.
SUMMERY OF THE UTILITY MODEL
The utility model discloses hope to provide a heating cable, concrete scheme is as follows:
a heating cable comprises a heating conductor layer, an insulating layer, a protective layer and an outer sleeve layer from inside to outside in sequence,
the insulating layer comprises an inner insulating layer and an outer insulating layer, the inner insulating layer is an inorganic metal hydrate layer, and the outer insulating layer is a mineral layer;
the protective layers are a first protective layer and a second protective layer, the first protective layer is a high silica fire-proof layer, and the second protective layer is a carbon fiber composite layer;
the outer sleeve layer is of a wave structure.
The heating conductor layer is a heating alloy wire layer, the heating alloy wire layer is made of one of a chromium-nickel alloy wire, a nickel-chromium alloy wire or a copper-based alloy wire, the heating alloy wire layer is fast in heating, high in pressure resistance, stable in temperature and accurate in temperature control, and compared with other heating cables (such as niobium-aluminum heating cables), the heating conductor layer can reduce at least half of energy consumption when heated to the same temperature under the same condition.
A shielding layer is arranged between the insulating layer and the protective layer, the shielding layer adopts a copper wire braided copper wire mesh structure, and the shielding layer with the copper wire mesh structure can limit an electromagnetic field formed around the cable heating conductor layer in the heating conductor layer so as to prevent the electromagnetic field from diffusing to the outside, thereby improving the environmental protection property of the cable; meanwhile, the copper shielding layer is beneficial to increasing the overall mechanical strength and tensile strength of the cable, and the service life of the cable is prolonged.
Be equipped with the earth connection between outer insulating layer and the shielding layer, improved the application safety coefficient of cable.
The outer jacket layer is made of aluminum alloy, and the aluminum alloy outer jacket layer can resist oxidation, stamping and compression, so that the service life of the cable is prolonged to more than 70 years.
The utility model has the advantages as follows:
(1) The inner insulating layer and the outer insulating layer are arranged, wherein the inner insulating layer is an inorganic metal hydrate layer, and the inorganic metal hydrate is a non-toxic, odorless and halogen-free white jelly which has the functions of oxygen isolation and flame retardance; the outer insulating layer is a mineral layer, so that the high-temperature resistance and the fireproof performance of the product are enhanced, and meanwhile, due to the light characteristic of the mineral layer, the material is saved, the weight of the product is reduced, and the transportation is facilitated;
(2) The high silica fireproof layer and the carbon fiber composite layer are arranged, so that the safety of the cable is greatly improved (the high silica fireproof layer has higher fireproof performance, the carbon fiber composite layer has very low conductivity, and no contact inductance exists even if a human body is in direct contact with the high silica fireproof layer);
(3) The outer sleeve layer is of a wave structure, so that the heat dissipation area can be increased, the heat transfer performance is improved, and the heat utilization rate is increased; and the outer jacket layer adopts an aluminum alloy outer jacket layer, so that the cable can resist oxidation, stamping and compression, and the service life of the cable is as long as more than 70 years.
Drawings
Fig. 1 is a schematic structural view of a heating cable according to the present invention;
fig. 2 is a cross-sectional view of a heating cable according to the present invention;
wherein the reference numbers: 1 is a heat-generating conductor layer, 2 is an insulating layer, 3 is a passivation layer, 4 is an outer jacket layer, 5 is a shielding layer, 6 is a ground line, 21 is an inner insulating layer, 22 is an outer insulating layer, 31 is a first passivation layer, and 32 is a second passivation layer.
Detailed Description
The present invention will be further described with reference to the following embodiments.
As shown in fig. 1 and fig. 2, a heating cable sequentially comprises a heating conductor layer 1, an insulating layer 2, a protective layer 3 and an outer jacket layer 4 from inside to outside, wherein the insulating layer 2 comprises an inner insulating layer 21 and an outer insulating layer 22, the inner insulating layer 21 is an inorganic metal hydrate layer, and the outer insulating layer 22 is a mineral layer; the protective layer 3 is a first protective layer 31 and a second protective layer 32, the first protective layer 31 is a high silica fire-proof layer, and the second protective layer 32 is a carbon fiber composite layer; the outer layer 4 is in a wave structure. The outer jacket layer 4 is made of aluminum alloy, and the aluminum alloy outer jacket layer can resist oxidation, stamping and compression, so that the service life of the cable is prolonged to more than 70 years.
The heating conductor layer 1 is a heating alloy wire layer, the heating alloy wire layer is made of one of chromium-nickel alloy wires, nickel-chromium alloy wires or copper-based alloy wires, the heating alloy wire layer is fast in heating, high in pressure resistance, stable in temperature and accurate in temperature control, and compared with other heating cables (such as niobium-aluminum heating cables), the heating conductor layer can reduce at least half of energy consumption when being heated to the same temperature under the same condition.
A shielding layer 5 is arranged between the insulating layer 2 and the protective layer 3, the shielding layer 5 adopts a copper wire braided copper wire mesh structure, and the shielding layer 5 with the copper wire mesh structure can limit an electromagnetic field formed around the cable heating conductor layer in the heating conductor layer 1 so as to prevent the electromagnetic field from diffusing to the outside, thereby improving the environmental protection property of the cable; meanwhile, the shielding layer 5 made of copper is also beneficial to increasing the overall mechanical strength and tensile strength of the cable and prolonging the service life of the cable. A grounding wire 6 is arranged between the outer insulating layer 22 and the shielding layer 5, so that the safety factor is improved, wherein the grounding wire 6 is generally galvanized with about 10mmRound steel or tinned copper wire or 25mm 2 The above bare copper cord.
The inner insulating layer 21 and the outer insulating layer 22 are arranged, wherein the inner insulating layer 21 is an inorganic metal hydrate layer and has the functions of oxygen isolation and flame retardance; the outer insulating layer 22 is a mineral substance layer, so that the high temperature resistance and the fire resistance of the product are enhanced, meanwhile, due to the light characteristic of the mineral substance layer, the weight of the product is reduced due to the material saving, the transportation is convenient, most of the mineral substances have higher melting points and good flexibility, and the phenomenon of volatilization of harmful substances does not exist basically even if the mineral substances are burnt at a very high temperature, so that the mineral substance layer is a safe and environment-friendly insulating material; still set up high silica flame retardant coating (being first protective layer 31) and carbon fiber composite bed (being second protective layer 32), because high silica flame retardant coating has higher fire behavior, the conductivity of carbon fiber composite bed is very low, even human direct contact also can not touch the inductance, so set up the security that has improved the cable greatly like this.
The above embodiments are only used for explaining the inventive concept of the present invention, and not for limiting the protection of the present invention, and all the modifications that are insubstantial to the present invention by using this concept fall within the protection scope of the present invention.
Claims (5)
1. A heating cable, characterized in that: comprises a heating conductor layer, an insulating layer, a protective layer and an outer sleeve layer from inside to outside in sequence,
the insulating layer comprises an inner insulating layer and an outer insulating layer, the inner insulating layer is an inorganic metal hydrate layer, and the outer insulating layer is a mineral layer;
the protective layers are a first protective layer and a second protective layer, the first protective layer is a high silica fire-proof layer, and the second protective layer is a carbon fiber composite layer;
the outer sleeve layer is of a wave structure.
2. A heating cable as claimed in claim 1, wherein: the heating conductor layer is a heating alloy wire layer, and the heating alloy wire layer is made of one of a chromium-nickel alloy wire, a nickel-chromium alloy wire or a copper-based alloy wire.
3. A heating cable as claimed in claim 1, wherein: and a shielding layer is arranged between the insulating layer and the protective layer, and the shielding layer adopts a copper wire mesh structure woven by copper wires.
4. A heating cable as claimed in claim 3, wherein: and a grounding wire is arranged between the outer insulating layer and the shielding layer.
5. A heating cable as claimed in claim 1, wherein: the outer jacket layer is made of aluminum alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223016467.4U CN218585665U (en) | 2022-11-10 | 2022-11-10 | Heating cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223016467.4U CN218585665U (en) | 2022-11-10 | 2022-11-10 | Heating cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218585665U true CN218585665U (en) | 2023-03-07 |
Family
ID=85379461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223016467.4U Active CN218585665U (en) | 2022-11-10 | 2022-11-10 | Heating cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218585665U (en) |
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2022
- 2022-11-10 CN CN202223016467.4U patent/CN218585665U/en active Active
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