CN101959334A - Heating cable adopting twin-core nickel-chromium alloy stranded wires, silicon rubber insulating layers and sheaths and PVC sheath - Google Patents
Heating cable adopting twin-core nickel-chromium alloy stranded wires, silicon rubber insulating layers and sheaths and PVC sheath Download PDFInfo
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- CN101959334A CN101959334A CN 201010155587 CN201010155587A CN101959334A CN 101959334 A CN101959334 A CN 101959334A CN 201010155587 CN201010155587 CN 201010155587 CN 201010155587 A CN201010155587 A CN 201010155587A CN 101959334 A CN101959334 A CN 101959334A
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- heating cable
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Abstract
The invention relates to a heating cable adopting twin-core nickel-chromium alloy stranded wires, silicon rubber insulating layers and sheaths and a PVC sheath, which is mainly used for insulating and heating the pipelines and vessels in such fields as petrochemical industry, fire control, iron and steel, electricity, etc. The heating cable is compounded by core wires (1), first insulating layers (2), a second insulating layer (3), an inside sheath (4), a shielding layer (5), an outside sheath (6) and a reinforcing sheath (7) from inside to outside in sequence, wherein the core wires (1) adopt twin-core nickel-chromium alloy stranded wires; the first insulating layers (2), the second insulating layer (3), the inside sheath (4) and the outside sheath (6) are made of silicon rubbers; and the reinforcing sheath (7) is made of PVC. The heating cable can be repeatedly bent during installation, thus greatly lengthening the service life.
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 nichrome stranded wire silicon rubber 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: a kind of twin-core nichrome stranded wire silicon rubber insulation and sheath and PVC 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 the twin-core nichrome stranded wire, first insulating barrier, second insulating barrier, inner sheath and jacket material adopt silicon rubber, and the reinforced sheath material adopts PVC.
Operation principle:
Twin-core nichrome stranded wire silicon rubber insulation of the present invention and sheath and PVC sheath ribbon heater are a kind of electric-heating belts of being made heater (heart yearn), the insulation of silicon rubber do and sheath by nichrome stranded 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 nichrome stranded wire silicon rubber insulation has power output and the temperature resistant grade identical with permanent power ribbon heater in parallel with sheath and PVC 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 silicone rubber insulation layer 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 nichrome stranded wire silicon rubber insulation of the present invention and sheath and PVC 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 nichrome stranded wire silicon rubber insulation of the present invention and sheath and PVC 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 nichrome stranded wire silicon rubber insulation of the present invention and sheath and PVC 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 the twin-core nichrome stranded wire; First insulating barrier 2, second insulating barrier 3, inner sheath 4 and oversheath 6 materials adopt silicon rubber; Reinforced sheath 7 materials adopt PVC.
Claims (1)
1. a twin-core nichrome stranded wire silicon rubber insulation and sheath and PVC 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 the twin-core nichrome stranded wire, first insulating barrier (2), second insulating barrier (3), inner sheath (4) and oversheath (6) material adopt silicon rubber, and reinforced sheath (7) material adopts PVC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010155587 CN101959334A (en) | 2010-04-19 | 2010-04-19 | Heating cable adopting twin-core nickel-chromium alloy stranded wires, silicon rubber insulating layers and sheaths and PVC sheath |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010155587 CN101959334A (en) | 2010-04-19 | 2010-04-19 | Heating cable adopting twin-core nickel-chromium alloy stranded wires, silicon rubber insulating layers and sheaths and PVC sheath |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101959334A true CN101959334A (en) | 2011-01-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010155587 Pending CN101959334A (en) | 2010-04-19 | 2010-04-19 | Heating cable adopting twin-core nickel-chromium alloy stranded wires, silicon rubber insulating layers and sheaths and PVC sheath |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101959334A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2183128Y (en) * | 1993-10-09 | 1994-11-23 | 王玉基 | Screened heating-wire electric-warming blanket |
| CN2341339Y (en) * | 1997-12-09 | 1999-09-29 | 程崇钧 | Automatic temperature controlling electric heating wire |
| CN1472989A (en) * | 2002-07-31 | 2004-02-04 | 张志洪 | Fluroplastic alloy heating cable |
| CN1494357A (en) * | 2002-10-29 | 2004-05-05 | 张志洪 | Glass fiber mica alloy heat generating wire cable |
-
2010
- 2010-04-19 CN CN 201010155587 patent/CN101959334A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2183128Y (en) * | 1993-10-09 | 1994-11-23 | 王玉基 | Screened heating-wire electric-warming blanket |
| CN2341339Y (en) * | 1997-12-09 | 1999-09-29 | 程崇钧 | Automatic temperature controlling electric heating wire |
| CN1472989A (en) * | 2002-07-31 | 2004-02-04 | 张志洪 | Fluroplastic alloy heating cable |
| CN1494357A (en) * | 2002-10-29 | 2004-05-05 | 张志洪 | Glass fiber mica alloy heat generating wire cable |
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| 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: 20110126 |