CN106385723A - Series three-core constant power ribbon heater - Google Patents
Series three-core constant power ribbon heater Download PDFInfo
- Publication number
- CN106385723A CN106385723A CN201610810325.5A CN201610810325A CN106385723A CN 106385723 A CN106385723 A CN 106385723A CN 201610810325 A CN201610810325 A CN 201610810325A CN 106385723 A CN106385723 A CN 106385723A
- Authority
- CN
- China
- Prior art keywords
- core
- bus
- ribbon heater
- layer
- insulation layer
- 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.)
- Pending
Links
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 19
- 238000009413 insulation Methods 0.000 claims abstract description 16
- 238000010438 heat treatment Methods 0.000 claims abstract description 13
- 239000000779 smoke Substances 0.000 claims abstract description 8
- 229920002397 thermoplastic olefin Polymers 0.000 claims abstract description 8
- KWKAKUADMBZCLK-UHFFFAOYSA-N 1-octene Chemical group CCCCCCC=C KWKAKUADMBZCLK-UHFFFAOYSA-N 0.000 claims abstract description 4
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000005977 Ethylene Substances 0.000 claims abstract description 4
- 239000005038 ethylene vinyl acetate Substances 0.000 claims abstract description 4
- 238000011065 in-situ storage Methods 0.000 claims abstract description 4
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims abstract description 4
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 4
- 239000012968 metallocene catalyst Substances 0.000 claims abstract description 3
- 229910052736 halogen Inorganic materials 0.000 claims abstract 2
- 150000002367 halogens Chemical class 0.000 claims abstract 2
- 239000002184 metal Substances 0.000 claims abstract 2
- 229910052751 metal Inorganic materials 0.000 claims abstract 2
- 230000004888 barrier function Effects 0.000 claims description 28
- 239000000463 material Substances 0.000 claims description 13
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 7
- 239000003063 flame retardant Substances 0.000 claims description 7
- 239000004812 Fluorinated ethylene propylene Substances 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 claims description 5
- 229920009441 perflouroethylene propylene Polymers 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 3
- 239000004020 conductor Substances 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 3
- 238000007747 plating Methods 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 239000003365 glass fiber Substances 0.000 claims 1
- 229920001169 thermoplastic Polymers 0.000 claims 1
- 239000004416 thermosoftening plastic Substances 0.000 claims 1
- 238000005485 electric heating Methods 0.000 description 18
- 238000000034 method Methods 0.000 description 6
- 230000003287 optical effect Effects 0.000 description 5
- 229910001092 metal group alloy Inorganic materials 0.000 description 4
- 239000002480 mineral oil Substances 0.000 description 4
- 235000010446 mineral oil Nutrition 0.000 description 4
- 229920002725 thermoplastic elastomer Polymers 0.000 description 4
- 238000010998 test method Methods 0.000 description 3
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 230000002528 anti-freeze Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 239000011152 fibreglass Substances 0.000 description 2
- 238000002386 leaching Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000013022 formulation composition Substances 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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
-
- 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
- H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
-
- 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
- H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
- H05B3/12—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
-
- 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
- H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
- H05B3/18—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor the conductor being embedded in an insulating material
Landscapes
- Resistance Heating (AREA)
Abstract
The present invention discloses a series three-core constant power ribbon heater. The ribbon heater comprises three mutually parallel heating buses, each heating bus includes a bus copper core and a bus insulation layer wrapped out of the bus copper core; a total insulation layer is arranged and wrapped at the outer portion of two power buses, the outer wrapping of the total insulation layer is provided with a metal wire braid layer; the outer portion of the wire braid layer is provided and wrapped with an outer covering layer; the total insulation layer is low smoke zero halogen thermoplastic polyolefin which is formed by mixing and extruding with the mass ratio of 3:7 of the first component and the second component; and the first component is a thermoplasticity elastic body through in-situ polymerization by using the ethylene and the octylene of the metallocene catalyst, and the second component is an ethylene-vinyl acetate copolymer. The series three-core constant power ribbon heater has good heating performance and can be applied to the common occasions and explosion-proof occasions of I and II grades two regions.
Description
Technical field
The present invention relates to a kind of electric-heating belt product technical field, particularly a kind of tandem type three core invariable power ribbon heater.
Background technology
Electric-heating belt is a kind of new high-tech product, and since its last century 70 enters application, they can
Be widely used in liquid object convey in the duct with the anti-freezing and heat-insulating of tank body, maintain technological temperature, heating highway, slope
Road, crossing, eaves and floor etc..When electric-heating belt works, a certain system of heat tracing, if in the unit interval electric-heating belt to
The heat that the heat of system transmission transmits to external environment equal to system, then the temperature holding of system is constant.System can be made to reach
Maximum temperature, referred to as highest maintain temperature.
Power output is constant always to invariable power electric-heating belt after powered up, will not be with external environment, insulation material, companion
The material of heat changes and changes, and the output of its power or stopping generally being controlled by temperature sensor.Tandem invariable power electricity companion
The torrid zone is as calandria by metal alloy wires core, and the metal alloy wires core with certain resistance can produce heat by electric current
Amount, the time that its size is passed through to current squaring, the resistance of metal alloy wires core and electric current is directly proportional；Therefore, tandem
Electric-heating belt, with the continuity of conduction time, continuously gives off heat, and forms a continuous, electric tracing for consistent heat generation
Band.Serial electric heating tape metal alloy wires core resistance is identical, size of current that is passing through is identical, so whole electric-heating belt
Head and the tail generate heat uniformly, and its output is constant not to be affected by ambient temperature and pipe temperature, is therefore applied to relatively long distance pipeline
Tracing thermal-insulating, powered with a power supply point, the longest up to 3000 meters；But tandem type ribbon heater is according to length of pipeline direct system
Making it is not possible to any montage.
Content of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of tandem type three core invariable power ribbon heater, Neng Gouman
Sufficient actual operation requirements.
The technical solution adopted for the present invention to solve the technical problems is：
A kind of tandem type three core invariable power ribbon heater, including three heating buses arranged in parallel, every described heating is female
Line all includes bus copper core and the bus insulation layer being wrapped in outside described bus copper core, is wound around parcel outside two described power source bus
It is provided with total insulating barrier, described total insulating barrier outer wrapping is provided with wire braid, also wraps up outside described wire braid
It is provided with external sheath layer；Described total insulating barrier is low-smoke halogen-free flame-retardant thermoplastic polyolefin, described low-smoke halogen-free flame-retardant thermoplastic
Polyolefin is formed according to 37 mass ratio mixing extrusion by the first component and the second component, described first component metallocene catalysis
The ethylene of agent and octene realize the thermoplastic elastomer (TPE) of in-situ polymerization, and described second group is divided into ethylene-vinyl acetate copolymer.
As the improvement further of technique scheme, described bus copper core is made up of tin plating copper stranded conductor, and described bus is exhausted
Edge layer is made up of fluorinated ethylene propylene copolymer material.
As the improvement further of technique scheme, it is additionally provided between described bus copper core and described bus insulation layer
Heatproof intermediate layer, described heatproof intermediate layer is fiberglass braided forming.
As the improvement further of technique scheme, described external sheath layer is fluorinated ethylene propylene copolymer material system
Become.
As the improvement further of technique scheme, outside described bus insulation layer and inside described total insulating barrier
It is additionally provided with heat conductive silica gel packed layer.
Compared with prior art, the invention has the beneficial effects as follows：
A kind of tandem type three core invariable power ribbon heater provided by the present invention, has preferable heating properties it is adaptable to loop is long
In the case that degree is beyond the parallel invariable power electric-heating belt upper limit, can be applicable to common occasion and I, II grade of 2nd area of explosion-proof occasion
The technological temperature of tubing, the heat tracing of storage tank, valve and the pump housing and antifreeze or instrument pipeline maintain and antifreeze, disclosure satisfy that
Actual operation requirements；Described total insulating barrier adopts the low-smoke halogen-free flame-retardant thermoplastic polyolefin of special formulation composition, not only can
Improve the flame retardant effect of electric-heating belt, and be conducive to improving the heating-up temperature stability of electric-heating belt；Setting heatproof intermediate layer
On the one hand can strengthen heating the structural strength of bus, on the other hand can avoid bus insulation layer directly contact bus copper core,
Thus reducing the rate of ageing causing due to the bus copper core under bus insulation layer directly contact febrile state；Setting heat conduction
Silicone filler layer can improve heat transfer efficiency.
Brief description
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 is a kind of structural representation of tandem type three core invariable power ribbon heater of the present invention.
Specific embodiment
With reference to Fig. 1, Fig. 1 is the structural representation of one specific embodiment of the present invention.
As shown in figure 1, a kind of tandem type three core invariable power ribbon heater, including three heating buses arranged in parallel,
The bus insulation layer 3 that every described heating bus all includes bus copper core 1 and is wrapped in outside described bus copper core 1, described in two
It is wound around parcel outside power source bus and is provided with total insulating barrier 5, described total insulating barrier 5 outer wrapping is provided with wire braid 6, described
The outer also parcel of wire braid 6 is provided with external sheath layer 7；Described total insulating barrier 5 is low-smoke halogen-free flame-retardant thermoplastic polyolefin,
Described low-smoke halogen-free flame-retardant thermoplastic polyolefin is formed according to 37 mass ratio mixing extrusion by the first component and the second component,
The ethylene of described first component metallocene catalyst and octene realize the thermoplastic elastomer (TPE) of in-situ polymerization, and described second group is divided into
Ethylene-vinyl acetate copolymer.
Further, described bus copper core 1 is made up of tin plating copper stranded conductor, and described bus insulation layer 3 is PEP
Copolymer material is made；It is additionally provided with heatproof intermediate layer 2, described heatproof between described bus copper core 1 and described bus insulation layer 3
Intermediate layer 2 is fiberglass braided forming；Described external sheath layer 7 is made up of fluorinated ethylene propylene copolymer material；Described bus
Insulating barrier 3 outside and be located at and be additionally provided with heat conductive silica gel packed layer 4 inside described total insulating barrier 5.
A kind of tandem type three core invariable power ribbon heater the performance test results that the present embodiment is provided are as follows：
Survey the low-temperature bending performance of total insulating barrier：According to GB/T2951.14-2008《Cable and optical cable insulating and sheath material lead to
With test method the 14th part:GENERAL EXPERIMENTATION low-temperature test》National standard, surveys total insulating barrier of electric-heating belt
Do not ftracture in the case of all -30 DEG C of low-temperature bending, meet in GB19518.1-2004 national standard -25 DEG C～-30 DEG C indehiscent
Require.
Survey the heat extensibility energy of total insulating barrier：According to GB/T2951.21-2008《Cable and optical cable insulating and sheath material
GENERAL EXPERIMENTATION the 21st part:Elastomer compound Special test method ozone resistance test heat extends examination
Test leaching mineral oil test》National standard, surveys the hot elongation percentage of total insulating barrier of electric-heating belt all≤80%, meets country's mark
Accurate≤150% requirement.
Survey the tensile strength of total insulating barrier：According to GB/T2951《Cable and optical cable insulating and sheath material universal test side
Method》, the tensile strength surveying total insulating barrier of electric-heating belt all reaches 22 MPa, far above 12.5 Mpa national standards requirements.
Survey the heat aging performance of total insulating barrier：GB/T2951《Cable and optical cable insulating and sheath material universal test side
Method》, survey tensile strength change≤± 12% of total insulating barrier of electric-heating belt, less than the requirement of national standard≤± 20%.
Survey the artificial weathering test performance of total insulating barrier：According to GB12527-2008《Rated voltage 1 kV and following
Aerial insulated cable》National standard, the tensile strength change of total insulating barrier and the extension at break rate of change of surveying electric-heating belt are equal
≤ ± 10%, less than the requirement of national standard≤± 15%.
Survey the resistance to mineral oil performance of total insulating barrier：According to GB/T2951.21-2008《Cable and optical cable insulating and sheath material
Material GENERAL EXPERIMENTATION the 21st part:Elastomer compound Special test method ozone resistance test heat extends examination
Test leaching mineral oil test》National standard, surveys the tensile strength change after total insulating barrier soaks mineral oil and extension at break becomes
Rate all≤± 28%, much smaller than the requirement of GB/T12706.1-2008≤± 40%.
Survey total insulating barrier heat stability performance：According to GB/T19518.1-2004 national standard, survey 140 DEG C of bars of electric-heating belt
After depositing 4 weeks under part, bear 1500 V/1min and no puncture.
Survey the waterproof test performance of total insulating barrier：According to GB/T19835-2005《Self-limiting heating cable》National standard, surveys
Bear 3.5 KV/1min after electric-heating belt immersion 48 h no to puncture.
Preferable enforcement to the present invention is illustrated above, and certainly, the present invention can also adopt and above-mentioned enforcement
The different form of mode, those of ordinary skill in the art are in the equivalent conversion made without prejudice on the premise of present invention spirit
Or change accordingly, all should belong in protection scope of the present invention.
Claims (5)
1. a kind of tandem type three core invariable power ribbon heater it is characterised in that：Including three heating buses arranged in parallel, often
Described in root, heating bus all includes bus copper core（1）Be wrapped in described bus copper core（1）Outer bus insulation layer（3）, two
It is wound around parcel outside described power source bus and be provided with total insulating barrier（5）, described total insulating barrier（5）Outer wrapping is provided with metal wire knitted
Layer（6）, described wire braid（6）Outer also parcel is provided with external sheath layer（7）；Described total insulating barrier（5）For low smoke and zero halogen
Flame-proofed thermoplastic polyolefin, described low-smoke halogen-free flame-retardant thermoplastic polyolefin by the first component and the second component according to 37 matter
Amount forms than mixing extrusion, and the ethylene of described first component metallocene catalyst and octene realize the thermoplastic elastic of in-situ polymerization
Body, described second group is divided into ethylene-vinyl acetate copolymer.
2. a kind of tandem type three core invariable power ribbon heater according to claim 1 it is characterised in that：Described bus copper core
（1）It is made up of tin plating copper stranded conductor, described bus insulation layer（3）It is made up of fluorinated ethylene propylene copolymer material.
3. a kind of tandem type three core invariable power ribbon heater according to claim 1 it is characterised in that：Described bus copper core
（1）With described bus insulation layer（3）Between be additionally provided with heatproof intermediate layer（2）, described heatproof intermediate layer（2）Compile for glass fibre
Knit and form.
4. a kind of tandem type three core invariable power ribbon heater according to claim 1 it is characterised in that：Described external sheath layer
（7）It is made up of fluorinated ethylene propylene copolymer material.
5. a kind of tandem type three core invariable power ribbon heater according to claim 1 it is characterised in that：Described bus insulation layer
（3）Outside and be located at described total insulating barrier（5）Inner side is additionally provided with heat conductive silica gel packed layer（4）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610810325.5A CN106385723A (en) | 2016-09-08 | 2016-09-08 | Series three-core constant power ribbon heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610810325.5A CN106385723A (en) | 2016-09-08 | 2016-09-08 | Series three-core constant power ribbon heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106385723A true CN106385723A (en) | 2017-02-08 |
Family
ID=57939175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610810325.5A Pending CN106385723A (en) | 2016-09-08 | 2016-09-08 | Series three-core constant power ribbon heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106385723A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107632642A (en) * | 2017-11-03 | 2018-01-26 | 上海正帆科技股份有限公司 | Exhaust pipe heating system |
| CN107989284A (en) * | 2017-11-25 | 2018-05-04 | 安邦电气股份有限公司 | A kind of gutter roof snow melt heating alloy band |
| CN113543391A (en) * | 2021-07-29 | 2021-10-22 | 无锡大洋高科热能装备有限公司 | Three-core armored heating belt |
| US11871486B2 (en) | 2017-02-01 | 2024-01-09 | Nvent Services Gmbh | Low smoke, zero halogen self-regulating heating cable |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2845379Y (en) * | 2005-12-12 | 2006-12-06 | 大庆畅联企业管理咨询有限公司 | The tandem ribbon heater |
| CN201813568U (en) * | 2010-06-01 | 2011-04-27 | 蔡振军 | High temperature resisting skin effect heating cable |
| CN103030917A (en) * | 2012-12-28 | 2013-04-10 | 浙江万马高分子材料有限公司 | Cracking-resistant thermoplastic low-smoke halogen-free flame-retardant polyolefin cable material |
| CN203523064U (en) * | 2013-10-10 | 2014-04-02 | 马鞍山东方电热科技有限公司 | Serial-type ribbon heater with metal reinforcement rib |
| CN204157083U (en) * | 2014-09-09 | 2015-02-11 | 芜湖市恒鑫电缆有限责任公司 | Lead heating cable for a kind of moistureproof pair |
-
2016
- 2016-09-08 CN CN201610810325.5A patent/CN106385723A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2845379Y (en) * | 2005-12-12 | 2006-12-06 | 大庆畅联企业管理咨询有限公司 | The tandem ribbon heater |
| CN201813568U (en) * | 2010-06-01 | 2011-04-27 | 蔡振军 | High temperature resisting skin effect heating cable |
| CN103030917A (en) * | 2012-12-28 | 2013-04-10 | 浙江万马高分子材料有限公司 | Cracking-resistant thermoplastic low-smoke halogen-free flame-retardant polyolefin cable material |
| CN203523064U (en) * | 2013-10-10 | 2014-04-02 | 马鞍山东方电热科技有限公司 | Serial-type ribbon heater with metal reinforcement rib |
| CN204157083U (en) * | 2014-09-09 | 2015-02-11 | 芜湖市恒鑫电缆有限责任公司 | Lead heating cable for a kind of moistureproof pair |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11871486B2 (en) | 2017-02-01 | 2024-01-09 | Nvent Services Gmbh | Low smoke, zero halogen self-regulating heating cable |
| US11956865B2 (en) | 2017-02-01 | 2024-04-09 | Nvent Services Gmbh | Low smoke, zero halogen self-regulating heating cable |
| CN107632642A (en) * | 2017-11-03 | 2018-01-26 | 上海正帆科技股份有限公司 | Exhaust pipe heating system |
| CN107989284A (en) * | 2017-11-25 | 2018-05-04 | 安邦电气股份有限公司 | A kind of gutter roof snow melt heating alloy band |
| CN113543391A (en) * | 2021-07-29 | 2021-10-22 | 无锡大洋高科热能装备有限公司 | Three-core armored heating belt |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170208 |