CN201057675Y - Compound core MI heating cable - Google Patents
Compound core MI heating cable Download PDFInfo
- Publication number
- CN201057675Y CN201057675Y CNU2007200041416U CN200720004141U CN201057675Y CN 201057675 Y CN201057675 Y CN 201057675Y CN U2007200041416 U CNU2007200041416 U CN U2007200041416U CN 200720004141 U CN200720004141 U CN 200720004141U CN 201057675 Y CN201057675 Y CN 201057675Y
- Authority
- CN
- China
- Prior art keywords
- composite core
- core
- heating cable
- composite
- skin
- 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
Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 24
- 150000001875 compounds Chemical group 0.000 title 1
- 239000002131 composite material Substances 0.000 claims abstract description 39
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 7
- 239000000843 powder Substances 0.000 claims abstract description 5
- 239000013078 crystal Substances 0.000 claims abstract description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 10
- 239000000956 alloy Substances 0.000 claims description 10
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- 239000002699 waste material Substances 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 3
- 229910052751 metal Inorganic materials 0.000 abstract description 3
- 239000002184 metal Substances 0.000 abstract description 3
- 230000001105 regulatory effect Effects 0.000 abstract 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 238000000137 annealing Methods 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 239000004411 aluminium Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 229910001006 Constantan Inorganic materials 0.000 description 2
- 229910018487 Ni—Cr Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 101100366060 Caenorhabditis elegans snap-29 gene Proteins 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- UGKDIUIOSMUOAW-UHFFFAOYSA-N iron nickel Chemical compound [Fe].[Ni] UGKDIUIOSMUOAW-UHFFFAOYSA-N 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
Images
Landscapes
- Resistance Heating (AREA)
Abstract
A composite core MI heating cable is provided, which is composed of a metal protecting sleeve, a crystal magnesia powder, an outer layer of composite core and an inner core of composite core. In no need of investing regulating power, the utility model can be widely used for the MI heating cables of different lengths and power according to various needs, which not only makes heat load and current density designed rationally to ensure service life, but also saves materials to reduce waste.
Description
The utility model relates to a kind of MI heating cable with " composite core ", especially can be widely used in various length differences, the different MI heating cable of power.
Technical field:
At present, known MI heating cable is the inorganic heating cable of high temperature that develops into by at mineral insulated cable or MI fireproof cable structural improvement.It makes 1～6 heat generating core cross section by electrothermal alloys such as copper, nickel chromium triangle, constantan, siderochrome aluminium is that circle is distributed on and determines to fill in the circle metallic sheath in the middle of the magnesium oxide cross section.Its certain-length one or both ends are imposed voltage produce Joule heat by the heat generating core electric current.Patent documentation CN1110862A " PTC flexible metal heating cable " is though possess all characteristics of narration, and it can't be widely used in the purposes in the different various places of various length differences, power.Mainly contain two serious defectives: 1. the supply voltage for the MI heating cable of all lengths, various power has nothing in common with each other, and is restricted with the 380V/220V power-frequency voltage, as can cause big cost investment waste with voltage controller power source.2. can not determine rationally because of heat load and current density, can cause burning out or waste of material that kind that therefore have to limited selection electrothermal alloy is as nickel chromium triangle, siderochrome Lv, Opinions-Pictures copper, copper etc.
Background technology:
The purpose of this utility model provides a kind of composite core MI heating heating cable, and it can not only possess above-mentioned PTC flexible metal heating cable characteristics, and is fit to various length differences, the different heating cable of power.
Summary of the invention:
Order of the present utility model be achieved in that with the basis of known MI heating cable manufacturing process on, at first make " composite core ".Above-mentioned various electrothermal alloys and all kinds of electric resistance alloy are enlarged the selection electrical resistivity range from copper 0.0179 Ω mm
2/ m～iron nickel aluminium OCr27Ni17A1M02 1.53 Ω mm
2/ m, get a kind of definite resistivity and the oval bar of electrothermal alloy of diameter, its endoporus of pipe electrothermal alloy of another kind of resistivity of determining and equal length is identical with the former, be enclosed within above it, form real core stock, is that drawing-down is elongated with drawbench by die orifice, the drawing-down again of will annealing is elongated, repeated multiple times is passed through die orifice, tentatively reach the outer and composite core inner core of composite core of the composite core of diameter and expectation resistance value, composite core is through in the middle of the metallic sheath, and evenly fully fill the crystal magnesium oxide powder in the space between both, also can open-cell sintered cylinder magnesium oxide joint string on composite core, connect and go here and there again in the metallic sheath centre together, make real core body and form real core body each other.And then elongate by die orifice drawing-down together with drawbench, the drawing-down again of annealing is elongated, and repeated multiple times reaches the product diameter and needs resistance value by die orifice, has formed composite core (the outer and composite core inner core of composite core) simultaneously.The resistance value that has had required composite core to need has just found the rated voltage such as the 380V/220V that are fit to easily, need not invest voltage controller power source, has just obtained performance number or rice performance number.And heat generating core diameter that can reasonable basis determines surface thermal load and current density, promptly do not use to burn out and do not produce waste material, guaranteed useful life, can extensively select various electrothermal alloy kinds.
Adopt such scheme, just can be widely used in various length differences, the different heating cable of power.Below in conjunction with drawings and Examples the utility model is further specified.
Description of drawings:
Fig. 1, Fig. 3, Fig. 5 are respectively the outline drawings of a core, two cores, three core composite core MJ heating cable.
Fig. 2, Fig. 4, Fig. 6 are respectively the side views of a core, two cores, three core composite core MI heating cable.
Among the figure: 1. outer 4. composite core inner cores of metallic sheath 2. magnesia powders 3. composite core.
Concrete enforcement:
One single core composite core MI heating cable is arranged in Fig. 1,2, at first get the long Φ 5mm of a 2m round bar constantan, resistivity 0.48 Ω mm
2/ m and the long Φ 8 * 1.5mm of a 2m siderochrome aluminium OCr27Ni17A1M02 pipe are enclosed within above the round bar equally long, form by " real core stock ", elongate by the die orifice drawing-down with drawbench, the drawing-down again of annealing is elongated, repeated multiple times is passed through die orifice, tentatively reach Φ 7.5mm and about 0.05 Ω, seal in a long 1Cr19Ni9Ti of 2m then; In the centre of Φ 28 * 3mm stainless steel pipe, each other with stainless steel tube in distance evenly equate, and in the space between both evenly fully filling expire an integral body of crystal magnesium oxide powder.Above-mentioned completed " integral body " is elongated after the annealing drawing-down again with drawbench by die orifice drawing-down together elongates, it is long to carry out repeatedly crossing about 50m repeatedly, external diameter Φ 4.6mm, composite core Φ 1.5mm, resistance value 28 Ω can directly adopt industrial 380V need not invest voltage controller power source, every meter heating power 103W/m, can be used to be no more than 300 ℃ of long-term continuous operations, its surface thermal load 0.7W/cm
2, current density 13.6A/mm
2, the material of employing and useful life are all more reasonable, have adopted composite core to obtain effect preferably.Below roughly the same, can make Fig. 3, Fig. 4 two cores and Fig. 5 and Fig. 6 three core composite core MI heating cable respectively.
Claims (3)
1. composite core MI heating cable, form by metallic sheath, crystal magnesium oxide powder, composite core skin and composite core inner core, composite core is made up of round bar electrothermal alloy and pipe electrothermal alloy, the round bar diameter is identical with the pipe endoporus, both resistivity differences, pipe is enclosed within above the round bar, preliminary elongation drawing-down, in the middle of going here and there then together in metallic sheath, evenly fill the crystalline oxides insulation, form " integral body ", use drawing process, elongate through drawing-down repeatedly and to reach external diameter and need resistance value, it is characterized in that: composite core is made of composite core inner core and composite core skin.
2. composite core heating cable according to claim 1 is characterized in that: the composite core inner core of composite core and composite core skin are to make with the different resistivity electrothermal alloy.
3. composite core heating cable according to claim 1 is characterized in that: composite core inner core and composite core skin through integral body repeatedly drawing reach the composite core of resistance value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200041416U CN201057675Y (en) | 2007-01-29 | 2007-01-29 | Compound core MI heating cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200041416U CN201057675Y (en) | 2007-01-29 | 2007-01-29 | Compound core MI heating cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201057675Y true CN201057675Y (en) | 2008-05-07 |
Family
ID=39426509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200041416U Expired - Fee Related CN201057675Y (en) | 2007-01-29 | 2007-01-29 | Compound core MI heating cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201057675Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102467993A (en) * | 2010-11-05 | 2012-05-23 | 于光 | Three-phase magnesium oxide metal sheath ultra-long power cable |
-
2007
- 2007-01-29 CN CNU2007200041416U patent/CN201057675Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102467993A (en) * | 2010-11-05 | 2012-05-23 | 于光 | Three-phase magnesium oxide metal sheath ultra-long power cable |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4626665A (en) | Metal oversheathed electrical resistance heater | |
| CN201057675Y (en) | Compound core MI heating cable | |
| CN216378292U (en) | Thermoforming equipment based on induction heating | |
| CN202773100U (en) | Heating pipe | |
| US3774013A (en) | Heat treating appliance for stress-relieving steel piping and like structures | |
| CN101956059A (en) | Device for continuously heating steel strip by direct energization | |
| CN2602575Y (en) | Silicon rubber parallel ribbon heater | |
| CN105939547A (en) | Carbon fiber heating cable for oil production | |
| CN204242648U (en) | A kind ofly can keep the water-cooled cable that current are unobstructed | |
| CN201986196U (en) | Coil assembly of induction heating furnace | |
| CN201608922U (en) | Armoured heating cable | |
| CN103476161B (en) | Heating pipe | |
| CN205179412U (en) | Alloy is induction coil for high -sintering | |
| CN201622861U (en) | Naked uniline and naked stranded wire used in electric wire conductor | |
| CN104534886B (en) | Assembled induction apparatus | |
| CN209042766U (en) | Heating device | |
| CN103624098A (en) | Extrusion forming device for electro-plastic pipe | |
| CN201893950U (en) | Heating wire capable of bearing high heat-flow density | |
| CN103611754A (en) | Auxiliary processing device for electric pulse pipe fitting | |
| CN203492216U (en) | Heating pipe | |
| CN203056463U (en) | Novel single core high voltage cable traction head | |
| CN207083243U (en) | A kind of nickel chromium triangle heats electrical filament | |
| CN206426442U (en) | A kind of improved extruder heater | |
| CN203068982U (en) | Heating furnace tube for coke thermal performance test furnace with electric furnace heating wire insulating layer | |
| CN202310145U (en) | Multi-power electric heating tube |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: WUXI HENGYE ELECTRICAL HEATER EQUIPMENT CO., LTD. Free format text: FORMER OWNER: ZHAO FANG Effective date: 20100811 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 214135 WUXI HENGYE ELECTRICAL HEATER EQUIPMENT CO., LTD. JINSHA ROAD, XINANSHADUNGANG, HUAZHUANG TOWN, BINHU DISTRICT, WUXI CITY, JIANGSU PROVINCE TO: 214131 NO.27, MINGFANG WEST ROAD, HUAZHUANG TOWN, WUXI CITY, JIANGSU PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20100811 Address after: 214131, No. 27 Ming Fang Xi Road, Hua Zhen, Wuxi, Jiangsu Patentee after: Wuxi Hengye Electric Heating Electrical Appliance Co., Ltd. Address before: Zhuang Zhen Xin Sha port pier Jinsha Road 214135 Jiangsu Lake City of Wuxi province bin Hua Wuxi Hengye electric heating appliance Co. Ltd. Patentee before: Zhao Fang |
|
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 214161 lakes in Jiangsu province Wuxi City foreshore Hu Dai Industrial Park extension area land Lotus Road No. 38 Patentee after: Wuxi Hengye Electric Heating Electrical Appliance Co., Ltd. Address before: 214131, No. 27 Ming Fang Xi Road, Hua Zhen, Wuxi, Jiangsu Patentee before: Wuxi Hengye Electric Heating Electrical Appliance Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080507 Termination date: 20150129 |
|
| EXPY | Termination of patent right or utility model |