CN210378543U - Double-guide double-heating nonmagnetic cable - Google Patents
Double-guide double-heating nonmagnetic cable Download PDFInfo
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- CN210378543U CN210378543U CN201921414877.XU CN201921414877U CN210378543U CN 210378543 U CN210378543 U CN 210378543U CN 201921414877 U CN201921414877 U CN 201921414877U CN 210378543 U CN210378543 U CN 210378543U
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Abstract
The utility model relates to a two nonmagnetic cable that generate heat of leading. The heating wire comprises a heating body, an electricity-proof ignition layer and a high-temperature-resistant layer, wherein the electricity-proof ignition layer and the high-temperature-resistant layer are sequentially coated outside the heating body; the outer sheath layer has a wall thickness of 2mm and an outer diameter of 6 mm.
Description
The technical field is as follows:
the utility model relates to a two nonmagnetic cable that generate heat of leading.
Background art:
most cable products in the current market are in a structure of single cross-linked polyethylene or silicon rubber as a high-temperature-resistant insulating protective layer, the single protective layer is easy to age under a high-temperature long-time working environment, if an overload current is generated, an insulating layer is easy to puncture, so that the cable is damaged to cause potential safety hazards, and most of the existing cables are shielded by adopting single aluminum foil wrapping on the technical treatment of an electromagnetic wave shielding layer, although the shielding process is low in cost, the electromagnetic wave shielding effect is not ideal, meanwhile, if the cables are buried in a cement layer during construction or for a long time, most of PVC sheath sheaths adopted in the industry are easy to damage or age and crack, the phenomena of oxidation, rusting, damage of the shielding layer and short circuit of a grounding wire can occur when the shielding layer is contacted with the cement for a long time, so that the use safety of the, it cannot work normally.
The utility model has the following contents:
the utility model discloses just to above-mentioned problem, a two nonmagnetic cables that generate heat that lead is provided.
In order to achieve the purpose, the utility model adopts the following technical scheme that a first-stage electromagnetic wave shielding layer, a second-stage electromagnetic wave shielding layer, a protective layer and an outer sheath layer are sequentially arranged from inside to outside, two heating wires are arranged in the first-stage electromagnetic wave shielding layer, each heating wire consists of a heating body, an electricity-proof ignition layer and a high-temperature-resistant layer, and the electricity-proof ignition layer and the high-temperature-resistant layer are sequentially coated outside the heating body; the outer sheath layer has a wall thickness of 2mm and an outer diameter of 6 mm.
The heating body is seven strands of nickel-copper alloy heating wires, the electric ignition preventing layer is fluoroethylene-propylene copolymer, and the high temperature resistant layer is polytetrafluoroethylene.
The primary electromagnetic wave shielding layer is a shielding net woven by 5 multiplied by 8 tinned copper wires.
The secondary electromagnetic wave shielding layer is an aluminum foil lapping shielding layer, and the protective layer is a polyester film.
The outer sheath layer is a modified flame-retardant polyvinyl chloride sheath.
The utility model has the advantages that:
the utility model discloses a seven strands of nickel copper heater cables of inside two wires as an organic whole wind back the line that generates heat that the technology has accomplished two wires, two lines that generate heat power resistance values can be fine offset mutual electromagnetic wave. The existence of the inner insulation protective layer prevents the electric sparking phenomenon between the heating wires and prevents the breakdown of the heating wires caused by unstable voltage. Polytetrafluoroethylene (PEFE) high temperature resistant material is as insulating protective layer, better reaches high temperature resistant high pressure resistant requirement, and the one-level shielding layer adopts 5 to 8 copper wires intensive weaves to form the shielding net, and furthest reaches the shielding and handles, guarantees that 1.5 square ground connection improves the security, and the copper wire surface tinning prevents ground connection shielding layer oxidation damage, guarantees safety. The secondary shielding layer is wrapped by an aluminum foil wrapping shielding layer to carry out double-layer electromagnetic wave shielding grounding treatment, and a polyester film is plated outside the aluminum foil wrapping shielding layer to replace the traditional plasticizer with a flame-retardant plasticizer; the copper-zinc system compound is added to ensure the flame-retardant smokeless combustion reaction, so that the cable outer sheath has higher safety under high-temperature open fire.
Description of the drawings:
fig. 1 is a schematic structural diagram of the present invention.
In the figure 1, a heating body, 2, an electric ignition preventing layer, 3, a high temperature resistant layer, 4, a first-level electromagnetic shielding layer, 5, a second-level electromagnetic shielding layer, 6, a protective layer, 7 and an outer sheath layer.
The specific implementation mode is as follows:
as shown in fig. 1, the first-stage electromagnetic wave shielding layer, the second-stage electromagnetic wave shielding layer, the protective layer and the outer sheath layer are sequentially arranged in the utility model from inside to outside, two heating wires are arranged in the first-stage electromagnetic wave shielding layer, each heating wire comprises a heating element, an electric-shock-proof layer and a high-temperature-resistant layer, and the electric-shock-proof layer and the high-temperature-resistant layer are sequentially coated outside the heating element; the outer sheath layer has a wall thickness of 2mm and an outer diameter of 6 mm.
The heating body is seven strands of nickel-copper alloy heating wires, the electric ignition preventing layer is fluoroethylene-propylene copolymer, and the high temperature resistant layer is polytetrafluoroethylene. In the fluoroethylene propylene copolymer, the mass ratio of polytetrafluoroethylene to hexafluoropropylene is 81: 19. The hexafluoropropylene content is improved, the wrapping performance of the electric-shock-resistant layer on the seven heating wires is improved, the electric shock phenomenon generated among the heating wires is avoided, and the heating wire breakdown caused by unstable voltage is prevented.
The primary shielding layer is a shielding net woven by 5 multiplied by 8 tinned copper wires. Shielding treatment is achieved to the maximum extent, 1.5 square grounding is guaranteed, safety is improved, tin is plated on the surface of the copper wire, the grounding shielding layer is prevented from being oxidized and damaged, and safety is guaranteed.
The secondary shielding layer is an aluminum foil lapping shielding layer, and the protective layer is a polyester film.
The outer sheath layer is a modified flame-retardant polyvinyl chloride sheath.
Claims (5)
1. A double-conducting double-heating nonmagnetic cable is characterized in that a primary electromagnetic wave shielding layer, a secondary electromagnetic wave shielding layer, a protective layer and an outer sheath layer are sequentially arranged from inside to outside, two heating wires are arranged in the primary electromagnetic wave shielding layer, each heating wire consists of a heating body, an electric-ignition-preventing layer and a high-temperature-resistant layer, and the electric-ignition-preventing layer and the high-temperature-resistant layer are sequentially coated outside the heating body; the outer sheath layer has a wall thickness of 2mm and an outer diameter of 6 mm.
2. The dual-conducting dual-heating nonmagnetic cable as claimed in claim 1, wherein the heating element is seven strands of nickel-copper alloy heating wires, the electric sparking resistant layer is fluoroethylene-propylene copolymer, and the high temperature resistant layer is polytetrafluoroethylene.
3. The double-conducting double-heating nonmagnetic cable according to claim 1, wherein the primary electromagnetic wave shielding layer is a shielding net woven by 5 x 8 tinned copper wires.
4. The dual-conductor dual-heating nonmagnetic cable according to claim 1, wherein the secondary electromagnetic wave shielding layer is an aluminum foil lapping shielding layer, and the protective layer is a polyester film.
5. The dual conductor dual heat generating nonmagnetic cable as recited in claim 1, wherein the outer jacket layer is a modified flame retardant polyvinyl chloride jacket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921414877.XU CN210378543U (en) | 2019-08-22 | 2019-08-22 | Double-guide double-heating nonmagnetic cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921414877.XU CN210378543U (en) | 2019-08-22 | 2019-08-22 | Double-guide double-heating nonmagnetic cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210378543U true CN210378543U (en) | 2020-04-21 |
Family
ID=70253395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921414877.XU Active CN210378543U (en) | 2019-08-22 | 2019-08-22 | Double-guide double-heating nonmagnetic cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210378543U (en) |
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2019
- 2019-08-22 CN CN201921414877.XU patent/CN210378543U/en active Active
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