CN201733470U - Bimetallic shielding electric heat tracing band - Google Patents
Bimetallic shielding electric heat tracing band Download PDFInfo
- Publication number
- CN201733470U CN201733470U CN2010202438802U CN201020243880U CN201733470U CN 201733470 U CN201733470 U CN 201733470U CN 2010202438802 U CN2010202438802 U CN 2010202438802U CN 201020243880 U CN201020243880 U CN 201020243880U CN 201733470 U CN201733470 U CN 201733470U
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- CN
- China
- Prior art keywords
- copper wire
- bimetallic
- electric
- heating belt
- plated copper
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Communication Cables (AREA)
- Insulated Conductors (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The utility model discloses a bimetallic shielding electric heat tracing band which comprises two conducting wires and is characterized in that the conducting wires are covered with a middle extruded heating material, the middle extruded heating material is covered with an insulated internal sheathing layer, the insulated internal sheathing layer is covered with a tin-plated copper wire woven shielding layer and a nickel-plated copper wire woven shielding layer, and the nickel-plated copper wire woven shielding layer is covered with an insulated external sheath. The utility model has the advantages of simple structure, convenient manufacturing, high cable intensity, good shielding performance, excellent anti-aging performance and long service life.
Description
Technical field:
The utility model relates to the accompanying-heat cable field, relates in particular to a kind of bimetallic shielding electric-heating belt.
Background technology:
Electric-heating belt is a kind of novel high-tech product, and it is since last century, entered application the seventies, and the self-limited type electric-heating belt has become electric-heating belt type the most general in the world today.They can be widely used in that liquid object is carried in pipeline and the anti-freezing and heat-insulating of tank body, keep technological temperature, heating highway, ramp, crossing, eaves and floor etc.The PTC macromolecular material that is distributing and playing heat effect between the self-limited type electric tracing inside, two conductive cores, its outside is made of macromolecule sheath, metallic shield net and macromolecule oversheath.When power connection, inner PTC macromolecular material expanded by heating, resistance become big, reduce heating power, and temperature is reduced; When temperature reduced, ptc material was met cold contraction, and resistance decreasing increases heating power, and temperature is risen, thereby reached the effect of automatic adjusting temperature.
Because as the energising cable, the electromagnetic field that is produced during work can interfere with the external world to electric-heating belt certainly, and when there was strong interference source in the external world, the operational environment of himself will be affected, thereby influences the operate as normal of electric-heating belt.The clamshell that high-permeability material is made is a kind of good electrical magnetic shielding device, can effectively make electromagnetic wave can only be penetrated into the skin of clamshell, can not influence the operate as normal of inside cable.
Because self constructing of electric-heating belt, when energising, two conductive cores can produce galvanomagnetic effect, when particularly working, and variations in temperature, size of current also changes thereupon, according to the oersted test, electromagnetic field also can constantly change, and for some high-precision instruments very big influence is arranged, so must add device, to reach the influence of shield electromagnetic.
The purpose of electromagnetic shielding is to cut off electromagnetic delivering path.Method with electromagnetic shielding solves electromagnetic interference problem.It can guarantee the circuit operate as normal in the electronic equipment, safety that again can support equipment.Present traditional electric-heating belt is for shield electromagnetic, generally be to take between inner sheath and oversheath, add the gauze screen of layer of aluminum magnesium alloy braiding, the function that certain absorption and bounce-back can be arranged for electromagnetic wave, in general the screening effectiveness of the gauze screen of present electric-heating belt on the market is within (general commercial the requirement) scope of 25-30DB.But this is strict for some installation environments, and a large amount of highly sophisticated device equipment are arranged in the operational environment, and as power plant and high accuracy communication transmission occasion, such shielding requirements is not enough to be competent at.
The utility model content:
The purpose of this utility model provides a kind of bimetallic shielding electric-heating belt, is characterized between sheath and oversheath, has increased the bimetallic screen of being made up of tinned wird and nickel plated copper wire, improves the effectiveness of existing electric-heating belt.
The technical solution adopted in the utility model is as follows:
A kind of bimetallic shielding electric-heating belt, comprise two leads, it is characterized in that extruding exothermic material in the middle of the lead outer wrapping, the centre extrudes exothermic material outer wrapping insulation sheath, insulation sheath outer wrapping tinned wird woven shield, nickel plated copper wire woven shield, nickel plated copper wire woven shield outer wrapping insulation oversheath.
Described lead is zinc-plated round copper electric lead.
It is the PTC exothermic material that described centre extrudes exothermic material.
Compare with existing electric-heating belt, this utility model is between sheath and oversheath, increased the bimetallic screen of forming by tinned wird and nickel plated copper wire, because the effect of insulation oversheath, what do not shield between tinned wird and the nickel plated copper wire interferes with each other, and all have high permeance property, can more effectively absorb electromagnetic wave.According to the test data of spectrum analyzer, improved novel dual metal shielding electric-heating belt can be controlled at screening effectiveness between the 50-60DB, near the screening effectiveness of military equipment, can fully satisfy most civilian shielding requirements.
Description of drawings:
Fig. 1 is a structural representation of the present utility model.
Embodiment:
A kind of bimetallic shielding electric-heating belt, comprise two zinc-plated round copper conductors 1, extrude PVC exothermic material 2 in the middle of zinc-plated round copper conductor 1 outer wrapping, the centre extrudes PVC exothermic material 2 outer wrapping polyethylene insulation sheaths 3, polyethylene insulation sheath 3 outer wrapping tinned wird woven shields 4, tinned wird woven shield 4 outer wrapping nickel plated copper wire woven shields 5, coating copper cash woven shield 5 outer wrapping polyethylene insulation oversheaths 6.
Claims (3)
1. a bimetallic shields electric-heating belt, comprise two leads, it is characterized in that extruding exothermic material in the middle of the lead outer wrapping, the centre extrudes exothermic material outer wrapping insulation sheath, insulation sheath outer wrapping tinned wird woven shield, nickel plated copper wire woven shield, nickel plated copper wire woven shield outer wrapping insulation oversheath.
2. bimetallic shielding electric-heating belt according to claim 1 is characterized in that described lead is zinc-plated round copper electric lead.
3. bimetallic shielding electric-heating belt according to claim 1 is characterized in that it is the PTC exothermic material that described centre extrudes exothermic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202438802U CN201733470U (en) | 2010-06-30 | 2010-06-30 | Bimetallic shielding electric heat tracing band |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202438802U CN201733470U (en) | 2010-06-30 | 2010-06-30 | Bimetallic shielding electric heat tracing band |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201733470U true CN201733470U (en) | 2011-02-02 |
Family
ID=43524624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202438802U Expired - Fee Related CN201733470U (en) | 2010-06-30 | 2010-06-30 | Bimetallic shielding electric heat tracing band |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201733470U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106982484A (en) * | 2017-03-17 | 2017-07-25 | 贵州天虹志远电线电缆有限公司 | Strengthen the electric-heating belt of shielding |
| CN108430122A (en) * | 2018-02-26 | 2018-08-21 | 安徽宥宇电热器材有限公司 | A kind of high temperature temperature selflimiting electric tracing band |
-
2010
- 2010-06-30 CN CN2010202438802U patent/CN201733470U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106982484A (en) * | 2017-03-17 | 2017-07-25 | 贵州天虹志远电线电缆有限公司 | Strengthen the electric-heating belt of shielding |
| CN108430122A (en) * | 2018-02-26 | 2018-08-21 | 安徽宥宇电热器材有限公司 | A kind of high temperature temperature selflimiting electric tracing band |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110202 Termination date: 20150630 |
|
| EXPY | Termination of patent right or utility model |