CN109661052A - A kind of high stability armored heating cable - Google Patents
A kind of high stability armored heating cable Download PDFInfo
- Publication number
- CN109661052A CN109661052A CN201811521439.3A CN201811521439A CN109661052A CN 109661052 A CN109661052 A CN 109661052A CN 201811521439 A CN201811521439 A CN 201811521439A CN 109661052 A CN109661052 A CN 109661052A
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- CN
- China
- Prior art keywords
- insulator
- insulation resistance
- temperature
- outer pipe
- electric heating
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- 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.)
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Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/40—Heating elements having the shape of rods or tubes
- H05B3/54—Heating elements having the shape of rods or tubes flexible
- H05B3/56—Heating cables
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- Insulated Conductors (AREA)
Abstract
The invention discloses a kind of high stability armored heating cable, including electric heating wire, insulator and metal outer pipe, electric heating wire is located at the middle position in metal outer pipe, and insulator is filled between metal outer pipe and electric heating wire, and the insulator is MgSiO3, the insulator is by MgO and SiO2It reacts at high temperature.After several comparative tests, insulator in the data display present invention can greatly improve insulation resistance and dielectric strength at high temperature, especially used in high-temperature region, it is capable of providing interpolar high-temperature insulation resistance, insulation resistance is avoided the phenomenon that hurried decline occur with the raising of temperature, to greatly improve the stability that armored heating cable uses, the incidence of leaky is reduced, is improved service life.
Description
Technical field
The present invention relates to a kind of heating cable, specifically a kind of high stability armored heating cable.
Background technique
Armored heating cable includes electric heating wire, insulator and metal outer pipe, during electric heating wire is located in metal outer pipe
Between position, insulator is filled between metal outer pipe and electric heating wire.Current insulator is pure MgO or pure Al2O3, and
The insulation resistance of such insulating materials is smaller at high temperature, and can be with the raising of temperature and hurried decline, stability are poor, Yi Zao
At high temperature leaky, the service life of armored heating cable under high temperature is directly affected.
Summary of the invention
In view of the above-mentioned problems, the problem of present invention intends to solve is to provide, a kind of insulation resistance is big, and the high height of dielectric strength is steady
Qualitative armored heating cable greatly improves armored heating cable stability in use, especially in high-temperature region, is capable of providing interpolar height
Warm insulation resistance avoids insulation resistance from the phenomenon that hurried decline occur with the raising of temperature, reduces the incidence of leaky,
It improves service life.
In order to achieve the above objectives, the invention adopts the following technical scheme: a kind of high stability armored heating cable, including electricity
Heater strip, insulator and metal outer pipe, electric heating wire are located at the middle position in metal outer pipe, and insulator is filled in metal outer pipe
Between electric heating wire, the insulator is MgSiO3, the insulator is by MgO and SiO2It reacts at high temperature.
Effective achievement of the invention: insulator is set as MgSiO by the present invention3, which is by MgO and SiO2In high temperature
Under react.After several comparative tests, the insulator in the data display present invention can greatly improve absolutely at high temperature
Edge resistance and dielectric strength especially use in high-temperature region, are capable of providing interpolar high-temperature insulation resistance, avoid insulation resistance with temperature
The raising of degree and there is the phenomenon that hurried decline, to greatly improve the stability that armored heating cable uses, it is existing to reduce electric leakage
The incidence of elephant, improves service life.
Specific embodiment
In order to make those skilled in the art better understand the present invention program, come pair below in conjunction with comparative experimental data
Technical solution of the present invention carries out clear, complete description.
The invention discloses a kind of high stability armored heating cable, including electric heating wire, insulator and metal outer pipe, electricity
Heater strip is located at the middle position in metal outer pipe, and insulator is filled between metal outer pipe and electric heating wire, and insulator is
MgSiO3, insulator is by MgO and SiO2It reacts at high temperature.
The present invention is compared by following three experiments and is concluded that
Experiment one: by testing pure MgO, it is found at 400 DEG C, insulation resistance is 500M Ω；At 500 DEG C
When, insulation resistance is 10M Ω；At 600 DEG C, insulation resistance is 1M Ω；At 700 DEG C, insulation resistance is 0.5M Ω；800
DEG C when, insulation resistance be 0.2M Ω；And it is not just available at 900 DEG C.
Experiment two: by pure Al2O3It is tested, finds it at 400 DEG C, insulation resistance is 500M Ω；500
DEG C when, insulation resistance be 10M Ω；At 600 DEG C, insulation resistance is 1M Ω；At 700 DEG C, insulation resistance is 0.5M Ω；?
At 800 DEG C, insulation resistance is 0.2M Ω；And it is not just available at 900 DEG C.
Experiment three: by testing the insulator in the present invention, find its at 400 DEG C and 500M Ω, insulated electro
Resistance is up to infinitely great；At 600 DEG C, insulation resistance is 500M Ω；At 700 DEG C, insulation resistance is 150M Ω；At 800 DEG C,
Insulation resistance is 40M Ω；At 900 DEG C, there are also 5M Ω for insulation resistance.
Conclusion: by three above Experimental comparison, it will be evident that being by MgO and SiO by insulator design2In high temperature
MgSiO made of lower reaction3.It can be made to greatly improve insulation resistance and dielectric strength at high temperature, especially in high-temperature region
It uses, is capable of providing interpolar high-temperature insulation resistance, avoids insulation resistance from the phenomenon that hurried decline occur with the raising of temperature, greatly
The big stability for improving armored heating cable and using, reduces the incidence of leaky, improves service life.
Obviously, described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment all should belong to the scope of protection of the invention.
Claims (1)
1. a kind of high stability armored heating cable, including electric heating wire, insulator and metal outer pipe, electric heating wire is located at metal
Middle position in outer tube, insulator are filled between metal outer pipe and electric heating wire, it is characterised in that: the insulator is
MgSiO3, the insulator is by MgO and SiO2It reacts at high temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811521439.3A CN109661052A (en) | 2018-12-06 | 2018-12-06 | A kind of high stability armored heating cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811521439.3A CN109661052A (en) | 2018-12-06 | 2018-12-06 | A kind of high stability armored heating cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109661052A true CN109661052A (en) | 2019-04-19 |
Family
ID=66114429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811521439.3A Pending CN109661052A (en) | 2018-12-06 | 2018-12-06 | A kind of high stability armored heating cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109661052A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB375522A (en) * | 1930-06-18 | 1932-06-30 | Gen Cable Corp | Improvements in insulated electrical conductors |
| CN1729272A (en) * | 2002-10-17 | 2006-02-01 | 陶瓷聚合体有限公司 | Fire resistant polymeric compositions |
| CN1760994A (en) * | 2004-10-12 | 2006-04-19 | 方世满 | High temperature ceramics electromagnetic wire, and manufacturing method |
| CN201119021Y (en) * | 2007-11-27 | 2008-09-17 | 廖伟创 | An electric heating pipe |
| CN201536020U (en) * | 2009-07-22 | 2010-07-28 | 袁勤华 | Armored thermocouple cable |
-
2018
- 2018-12-06 CN CN201811521439.3A patent/CN109661052A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB375522A (en) * | 1930-06-18 | 1932-06-30 | Gen Cable Corp | Improvements in insulated electrical conductors |
| CN1729272A (en) * | 2002-10-17 | 2006-02-01 | 陶瓷聚合体有限公司 | Fire resistant polymeric compositions |
| CN1760994A (en) * | 2004-10-12 | 2006-04-19 | 方世满 | High temperature ceramics electromagnetic wire, and manufacturing method |
| CN201119021Y (en) * | 2007-11-27 | 2008-09-17 | 廖伟创 | An electric heating pipe |
| CN201536020U (en) * | 2009-07-22 | 2010-07-28 | 袁勤华 | Armored thermocouple cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190419 |
|
| RJ01 | Rejection of invention patent application after publication |