CN102045901A - Electromagnetic shielding technology of heating cable - Google Patents
Electromagnetic shielding technology of heating cable Download PDFInfo
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- CN102045901A CN102045901A CN2009101028145A CN200910102814A CN102045901A CN 102045901 A CN102045901 A CN 102045901A CN 2009101028145 A CN2009101028145 A CN 2009101028145A CN 200910102814 A CN200910102814 A CN 200910102814A CN 102045901 A CN102045901 A CN 102045901A
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- heating cable
- screen
- heating
- copper wires
- tinned copper
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- Resistance Heating (AREA)
Abstract
The invention discloses an electromagnetic shielding technology of a heating cable. The heating cable sequentially comprises a heating core, eight tinned copper wires, an insulating layer, a shielding layer and an outer jacket from inside to outside and is characterized in that the outer jacket of the heating cable is internally provided with a shielding layer, the shielding layer is made from braided fabrics of aluminum foils or metal wires and can fully shield an electromagnetic field generated by 50 Hz alternating current and the eight tinned copper wires are mainly used as grounding wires to improve the use safety of the heating cable.
Description
Technical field
The present invention discloses a kind of heating cable electromangnetic spectrum.
Background technology
Heating cable is with many characteristics such as its safety, efficient, easy control, the easy installation (can become arbitrary shape to install), life-span length, small investments, and the scope of application is extensive gradually.Heating cable is widely used in the electric floor heating heating system at present, and heating cable is that electric energy is converted into heat energy, and its energy transformation ratio is near 100%, and usefulness heating cable heating is effective, security reliability is high.But all can there be electromagnetic radiation in any electrical equipment, and heating cable also is, and is same inevitable.According to investigations, accept high frequency electromagnetic radiation for a long time, can cause serious harmful effect eyes, nervous system, reproductive system, cardiovascular system, digestive system and bone tissue, even threat to life.
Summary of the invention
The electromagnetic field that the objective of the invention is to solve the deficiencies in the prior art and provide a kind of heating cable electromangnetic spectrum, this technology to reduce heating cable greatly to be produced is to the influence of human body and to the interference of household electrical appliance.
The technical solution adopted for the present invention to solve the technical problems is: heating cable is that electric energy is converted into heat energy, the resistance wire that its heater element is made up of copper, nickel alloy, in a heating cable, the interior resistance of random length distance equates, heating cable is by special process will generate heat line and cold line fuse (have and claim latent type joint), after cold line is coupled with voltage, electric current passes through in heating cable, owing to be subjected to the obstruction of resistance, electric energy is converted into heat energy and comes out with the form of radiation, and its heat efficiency is up on 98%.Heating cable is from innermost heat generating core, and heat generating core is made by alloy resistance wire, outwards is insulating barrier, and insulating barrier adopts crosslinked polyethylene (XLPE) to make, and insulating barrier is outward a tinned wird, tinned wird altogether by 8 tinned wirds as earth connection.It outside insulating barrier screen, electromagnetic field is played shielding action, and screen can utilize aluminium foil or braid wiry to make, and adopts screen mode to shield to heating cable, metallic shield and pressure ground connection can mask the electromagnetic field that the 50Hz alternating current is produced fully.Adopt the good polyethylene of acid and alkali resistance corrosivity (PVC) to make sheath at last.
Described insulating barrier is outward a screen, and the screen back-emf is low, and to almost not influence of environment, isolated electromagnetic radiation is far superior to national standard.
Described 8 tinned copper wires and metallic shield Continuous Contact, zinc-plated assurance ground wire contacts with screen and binding post durability, has improved fail safe greatly;
Advantage of the present invention derives from two innovations technically: 1, earth connection adopts 8 tinned wirds as earth connection, screen can utilize aluminium foil or braid wiry to make, adopt screen mode to shield to heating cable, effectively avoided electromagnetic field to the influence of human body and to the interference of household electrical appliance; 2, appearance adopts the good polyethylene (PVC) of acid and alkali resistance corrosivity to make sheath.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the heating cable structural representation
Fig. 2 is ground heating system engineering power frequency electromagnetic field Monitoring Data result
The present invention is further elaborated below in conjunction with accompanying drawing: according to Fig. 1 the structure of this heating cable is described, the heat generating core 1 outer screen 4 and restrictive coating 5 that 2,8 tinned copper wires 3 of insulating barrier is arranged successively, play shielding action.Wherein, insulating barrier 2 has insulation and the effect of protecting cable concurrently with restrictive coating 5.8 tinned copper wires 3 and screen 4 be the electromagnetism that produced of shield heating cable effectively, and screen 4 can utilize aluminium foil or braid wiry to make.
According to Fig. 2 is the heating cable that utilizes behind the present invention, and the electromagnetic radiation environment of the ground heating system of being formed is estimated power frequency electromagnetic field monitoring report, and its electromagnetic radiation electric field strength and magnetic flux density value are all less than the limit value of national regulation 4000V/m and 100uT.
The announcement of book and instruction according to the above description, those skilled in the art in the invention can also change and revise above-mentioned execution mode.Therefore, the embodiment that discloses and describe above the present invention is not limited to also should fall in the protection range of claim of the present invention modifications and changes more of the present invention.In addition, although used some specific terms in this specification, these terms do not constitute any restriction to the present invention just for convenience of description.
Claims (2)
1. the electromangnetic spectrum of a heating cable.Heating cable is followed successively by heat generating core, 8 tinned copper wires, insulating barrier, screen, oversheath from the inside to surface, it is characterized in that: one deck screen is arranged in the oversheath of heating cable, this screen utilizes aluminium foil or braid wiry to make, and can mask the electromagnetic field that the 50Hz alternating current is produced fully.
2. 8 tinned copper wires according to claim 1 is characterized in that: 8 tinned wirds mainly are as earth connection, to improve the safety in utilization of heating cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101028145A CN102045901A (en) | 2009-10-22 | 2009-10-22 | Electromagnetic shielding technology of heating cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101028145A CN102045901A (en) | 2009-10-22 | 2009-10-22 | Electromagnetic shielding technology of heating cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102045901A true CN102045901A (en) | 2011-05-04 |
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ID=43911508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101028145A Pending CN102045901A (en) | 2009-10-22 | 2009-10-22 | Electromagnetic shielding technology of heating cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102045901A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102958213A (en) * | 2012-11-08 | 2013-03-06 | 练高水 | Metal overall shielding double-conductor heating cable |
| CN107426840A (en) * | 2017-09-11 | 2017-12-01 | 贵州固达电缆有限公司 | A kind of pair is led carbon fiber heating cable |
-
2009
- 2009-10-22 CN CN2009101028145A patent/CN102045901A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102958213A (en) * | 2012-11-08 | 2013-03-06 | 练高水 | Metal overall shielding double-conductor heating cable |
| CN107426840A (en) * | 2017-09-11 | 2017-12-01 | 贵州固达电缆有限公司 | A kind of pair is led carbon fiber heating cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110504 |