CN201750572U - Paraformaldehyde (PFA) insulation and protective sleeve short-distance constant-power electric heating belt of double-core konstantan alloy stranded wires - Google Patents
Paraformaldehyde (PFA) insulation and protective sleeve short-distance constant-power electric heating belt of double-core konstantan alloy stranded wires Download PDFInfo
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- CN201750572U CN201750572U CN2010201730738U CN201020173073U CN201750572U CN 201750572 U CN201750572 U CN 201750572U CN 2010201730738 U CN2010201730738 U CN 2010201730738U CN 201020173073 U CN201020173073 U CN 201020173073U CN 201750572 U CN201750572 U CN 201750572U
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Abstract
The utility model relates to a paraformaldehyde (PFA) insulation and protective sleeve short-distance constant-power electric heating belt of double-core konstantan alloy stranded wires, which is mainly used for the heat insulation and the heating of containers and pipelines for petrochemical engineering, fire control, iron and steel, electric power and the like. The electric heating belt is formed by sequentially compounding six layers: a core wire (1), a first insulation layer (2), a second insulation layer (3), an inner protective sleeve (4), a shielding layer (5) and an outer protective sleeve (6) from inside to outside, wherein the core wire (1) adopts the double-core konstantan alloy stranded wire, and the first insulation layer (2), the second insulation layer (3), the inner protective sleeve (4) and the outer protective sleeve (6) are made of materials of perfluoroethylene-cyclicether polymers. The electric heating belt of the utility model can be repeatedly bended during the installation, and the service life can be greatly prolonged.
Description
(1) technical field
The utility model 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 utility model was 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 purpose of this utility model 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 purpose of this utility model is achieved in that a kind of twin-core constantan twisted wire PFA insulation and the permanent power of sheath short distance 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 and oversheath totally six layers be composited, described heart yearn adopts twin-core constantan twisted wire, and first insulating barrier, second insulating barrier, inner sheath and jacket material adopt tetrafluoroethene-perfluor ether copolymer.
Operation principle:
The utility model twin-core constantan twisted wire PFA insulation and the permanent power of sheath short distance 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 beneficial effects of the utility model are:
Twin-core constantan twisted wire PFA insulation has power output and the temperature resistant grade identical with permanent power ribbon heater in parallel with the permanent power of sheath short distance 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 the utility model twin-core constantan twisted wire PFA insulation and the permanent power of sheath short distance 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 the utility model twin-core constantan twisted wire PFA insulation and the permanent power of sheath short distance 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, the permanent power of the utility model twin-core constantan twisted wire PFA insulation and sheath short distance ribbon heater, from interior outside oneself successively by heart yearn 1, first insulating barrier 2, second insulating barrier 3, inner sheath 4, screen 5 and oversheath 6 totally six 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).
Claims (1)
1. a twin-core constantan twisted wire PFA insulate and the permanent power of sheath short distance 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) and oversheath (6) totally six layers be composited, described heart yearn (1) adopts twin-core constantan twisted wire, and first insulating barrier (2), second insulating barrier (3), inner sheath (4) and oversheath (6) material adopt tetrafluoroethene-perfluor ether copolymer.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2010201730738U CN201750572U (en) | 2010-04-21 | 2010-04-21 | Paraformaldehyde (PFA) insulation and protective sleeve short-distance constant-power electric heating belt of double-core konstantan alloy stranded wires |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2010201730738U CN201750572U (en) | 2010-04-21 | 2010-04-21 | Paraformaldehyde (PFA) insulation and protective sleeve short-distance constant-power electric heating belt of double-core konstantan alloy stranded wires |
Publications (1)
Publication Number | Publication Date |
---|---|
CN201750572U true CN201750572U (en) | 2011-02-16 |
Family
ID=43585246
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2010201730738U Expired - Fee Related CN201750572U (en) | 2010-04-21 | 2010-04-21 | Paraformaldehyde (PFA) insulation and protective sleeve short-distance constant-power electric heating belt of double-core konstantan alloy stranded wires |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN201750572U (en) |
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2010
- 2010-04-21 CN CN2010201730738U patent/CN201750572U/en not_active Expired - Fee Related
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C17 | Cessation of patent right | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110216 Termination date: 20140421 |