CN101998707A - Double-core constantan alloy stranded wire poly fluoro alkoxy (PFA) insulated sheath and poly vinyl chloride (PVC) strengthening sheath electric heating belt - Google Patents
Double-core constantan alloy stranded wire poly fluoro alkoxy (PFA) insulated sheath and poly vinyl chloride (PVC) strengthening sheath electric heating belt Download PDFInfo
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- CN101998707A CN101998707A CN 201010158795 CN201010158795A CN101998707A CN 101998707 A CN101998707 A CN 101998707A CN 201010158795 CN201010158795 CN 201010158795 CN 201010158795 A CN201010158795 A CN 201010158795A CN 101998707 A CN101998707 A CN 101998707A
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Abstract
The invention relates to a double-core constantan alloy stranded wire poly fluoro alkoxy (PFA) PFA insulated sheath and a poly vinyl chloride (PVC) strengthening sheath electric heating belt, which are mainly used for heat preservation and heating of pipelines and containers for petrochemical, fire protection, steel, electric power and the like. The electric heating belt is compounded by the following seven layers in turn from the inside to the outside: a core wire (1), a first insulating layer (2), a second insulating layer (3), an inner sheath (4), a shielding layer (5), an outer sheath (6) and a strengthening sheath (7), wherein the core wire (1) is a double-core constantan alloy stranded wire; the first insulating layer (2), the second insulating layer (3), the inner sheath (4) and the outer sheath (6) are made from tetrafluoroethylene-perfluor ether copolymer; and the strengthening sheath (7) is made from PVC. The electric heating belt can be repeatedly bent when installed, so that the service life is greatly prolonged.
Description
(1) technical field
The present invention relates to a kind of permanent power ribbon heater.Be mainly used in the insulation and the heating of pipelines such as petrochemical industry, fire-fighting, iron and steel, electric power, container.The ground that also is applicable to solar pipe, the civil buildings snow melt etc. of warming up.Belong to the electrothermal device technical field.
(2) background technology
Before the present invention made, conventional permanent power ribbon heater was a kind of permanent power ribbon heater in parallel.Its structure as depicted in figs. 1 and 2.Its operation principle: power source bus is two parallel insulated copper wires, twines heating wire on the inner sheath insulating barrier, and heating wire is connected with power source bus at a certain distance, forms continuous parallel resistance.After the power source bus energising, each parallel resistance heating, thereby form a continuous heating tape.Its characteristics: the caloric value of ribbon heater unit length is constant, and the ribbon heater of use is long more, and the power of output is big more.The application scenario: permanent power ribbon heater in parallel generally is used for the tracing thermal-insulating of little pipeline or pipe network system short tube line.This perseverance power ribbon heater in parallel existing problems: permanent power ribbon heater in parallel is to be welded on copper busbar as heater by the thinner nichrome wire in line footpath because of product, should not repeat bending when install the ribbon heater, and useful life is short partially.
(3) summary of the invention
The objective of the invention is to overcome above-mentioned deficiency, can repeat bending when providing a kind of ribbon heater to install, the twin-core constantan twisted wire PFA insulation that useful life is long and the permanent power series electrical of the sheath short distance torrid zone.
The object of the present invention is achieved like this: PFA insulation of a kind of twin-core constantan twisted wire and sheath and PVC reinforced sheath ribbon heater, it is characterized in that described ribbon heater from interior from outside successively by heart yearn, first insulating barrier, second insulating barrier, inner sheath, screen, oversheath and reinforced sheath totally seven layers be composited, described heart yearn adopts twin-core constantan twisted wire, first insulating barrier, second insulating barrier, inner sheath and jacket material adopt tetrafluoroethene-perfluor ether copolymer, and the reinforced sheath material adopts PVC.
Operation principle:
Twin-core constantan twisted wire of the present invention PFA insulation and sheath and PVC reinforced sheath ribbon heater are a kind of electric-heating belts of being made heater (heart yearn), the insulation of PFA (tetrafluoroethene-perfluor ether copolymer) do and sheath by the constantan twisted wire, heart yearn two ends, ribbon heater are inserted power supply phase line and zero line respectively, form a single-phase heating circuit.Because the resistance of heart yearn unit length and the electric current that passes through are all constant, so whole ribbon heater generates heat evenly from beginning to end, power output is constant.
The invention has the beneficial effects as follows:
Twin-core constantan twisted wire PFA insulation has power output and the temperature resistant grade identical with permanent power ribbon heater in parallel with sheath and PVC reinforced sheath ribbon heater, but, mode of heating generates heat because of being become by heart yearn by the electrothermal wire heating, avoided ribbon heater in parallel in the past owing to bend repeatedly and the aging fault that causes of pad, can repeat bending when install the ribbon heater, prolong useful life greatly.200 ℃ of the high-temperature resistants of PFA insulating barrier and sheath ribbon heater product, 120 ℃ of the high maintenance temperature of medium.
(4) description of drawings
Fig. 1 is permanent power ribbon heater in parallel Facad structure schematic diagram in the past.
Fig. 2 is the A-A cut-away view of Fig. 1.
Fig. 3 is twin-core constantan twisted wire of the present invention PFA insulation and sheath and PVC reinforced sheath ribbon heater Facad structure schematic diagram.
Fig. 4 is the B-B cut-away view of Fig. 3.
Reference numeral among the figure:
(5) embodiment
Referring to Fig. 3～4, Fig. 3 is twin-core constantan twisted wire of the present invention PFA insulation and sheath and PVC reinforced sheath ribbon heater Facad structure schematic diagram.Fig. 4 is the B-B cut-away view of Fig. 3.By Fig. 3 and Fig. 4 as can be seen, twin-core constantan twisted wire of the present invention PFA insulation and sheath and PVC reinforced sheath ribbon heater, from interior from outside successively by heart yearn 1, first insulating barrier 2, second insulating barrier 3, inner sheath 4, screen 5, oversheath 6 and reinforced sheath 7 totally seven layers be composited.Described heart yearn 1 adopts twin-core constantan twisted wire; First insulating barrier 2, second insulating barrier 3, inner sheath 4 and oversheath 6 materials adopt PFA (tetrafluoroethene-perfluor ether copolymer); Reinforced sheath 7 materials adopt PVC.
Claims (1)
1. twin-core constantan twisted wire PFA insulation and sheath and PVC reinforced sheath ribbon heater, it is characterized in that described ribbon heater from interior from outside successively by heart yearn (1), first insulating barrier (2), second insulating barrier (3), inner sheath (4), screen (5), oversheath (6) and reinforced sheath (7) totally seven layers be composited, described heart yearn (1) adopts twin-core constantan twisted wire, first insulating barrier (2), second insulating barrier (3), inner sheath (4) and oversheath (6) material adopt tetrafluoroethene-perfluor ether copolymer, and reinforced sheath (7) material adopts PVC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010158795 CN101998707A (en) | 2010-04-21 | 2010-04-21 | Double-core constantan alloy stranded wire poly fluoro alkoxy (PFA) insulated sheath and poly vinyl chloride (PVC) strengthening sheath electric heating belt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010158795 CN101998707A (en) | 2010-04-21 | 2010-04-21 | Double-core constantan alloy stranded wire poly fluoro alkoxy (PFA) insulated sheath and poly vinyl chloride (PVC) strengthening sheath electric heating belt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101998707A true CN101998707A (en) | 2011-03-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010158795 Pending CN101998707A (en) | 2010-04-21 | 2010-04-21 | Double-core constantan alloy stranded wire poly fluoro alkoxy (PFA) insulated sheath and poly vinyl chloride (PVC) strengthening sheath electric heating belt |
Country Status (1)
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| CN (1) | CN101998707A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103269531A (en) * | 2013-06-04 | 2013-08-28 | 王辉 | Novel heating cable |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0124691A2 (en) * | 1983-04-07 | 1984-11-14 | Lufran, Inc. | Heating of a liquid in a container |
| CN2694692Y (en) * | 2003-09-27 | 2005-04-20 | 安东·哈尔姆伯格 | Electric heating cables and heating system employing same |
| CN1770931A (en) * | 2004-10-29 | 2006-05-10 | 休-电缆/电缆设计技术两合公司 | Electrical heating cable or electric heat belt with insulating sleeve in layer structure |
| CN201708963U (en) * | 2010-04-21 | 2011-01-12 | 江阴市华能电热器材有限公司 | Twin-core constantan alloy stranded wire PFA insulated sheath and PVC reinforced sheath ribbon heater |
-
2010
- 2010-04-21 CN CN 201010158795 patent/CN101998707A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0124691A2 (en) * | 1983-04-07 | 1984-11-14 | Lufran, Inc. | Heating of a liquid in a container |
| CN2694692Y (en) * | 2003-09-27 | 2005-04-20 | 安东·哈尔姆伯格 | Electric heating cables and heating system employing same |
| CN1770931A (en) * | 2004-10-29 | 2006-05-10 | 休-电缆/电缆设计技术两合公司 | Electrical heating cable or electric heat belt with insulating sleeve in layer structure |
| CN201708963U (en) * | 2010-04-21 | 2011-01-12 | 江阴市华能电热器材有限公司 | Twin-core constantan alloy stranded wire PFA insulated sheath and PVC reinforced sheath ribbon heater |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103269531A (en) * | 2013-06-04 | 2013-08-28 | 王辉 | Novel heating cable |
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Application publication date: 20110330 |