CN201937865U - Automatic temperature controlled heat tracing cable for semi-conductive high polymer copper electrode - Google Patents
Automatic temperature controlled heat tracing cable for semi-conductive high polymer copper electrode Download PDFInfo
- Publication number
- CN201937865U CN201937865U CN2011200601734U CN201120060173U CN201937865U CN 201937865 U CN201937865 U CN 201937865U CN 2011200601734 U CN2011200601734 U CN 2011200601734U CN 201120060173 U CN201120060173 U CN 201120060173U CN 201937865 U CN201937865 U CN 201937865U
- Authority
- CN
- China
- Prior art keywords
- layer
- ptc
- heat tracing
- electrode
- temperature controlled
- 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 - Lifetime
Links
Images
Abstract
The utility model discloses an automatic temperature controlled heat tracing cable for a semi-conductive high polymer copper electrode, the automatic temperature controlled heat tracing cable comprises two conductive electrodes (1), a PTC (positive temperature coefficient) material layer (3), an insulating layer (4), a metal shielding layer (5) and a sheathing layer (6), wherein the two conductive electrodes (1) are parallel to each other and are arranged in the PTC material layer (3), and the exterior of the PTC material layer (3) is sequentially provided with the insulating layer (4), the metal shielding layer (5) and the sheathing layer (6). The automatic temperature controlled heat tracing cable is characterized in that: each conductive electrode (1) is provided with a middle resistance layer (2), and the middle resistance layer (2) is arranged in the PTC material layer (3). The automatic temperature controlled heat tracing cable for the semi-conductive high polymer copper electrode has novel structure and is simple to produce, the starting current of the cable is small, the temperature control performance is stable, therefore, the automatic temperature controlled heat tracing cable can be widely used in the heat tracing and heat preservation projects such as oil, chemical industry, light industry, agricultural products processing and the like.
Description
Technical field
The utility model relates to a kind of heating cable, belongs to the electrothermal device technical field, and specifically a kind of semiconductive macromolecule copper-clad electrode is from the temperature control accompanying-heat cable.
Background technology
From the temperature control accompanying-heat cable is the intelligent insulation companion hot product that U.S. RAYCHEM company succeeds in developing the eighties, and it is used more and more widely.Common major component from the temperature control accompanying-heat cable is a PTC core band, by two parallel conductive electrodes, external application one deck matrix is a kind of semiconducting polymer's material with positive temperature coefficient (being called for short PTC) characteristic, and core band skin is followed successively by flame retardant insulation, screen and restrictive coating.When the accompanying-heat cable energized, electric current just vertically arrives another electrode by an electrode through the ptc material of cross-over connection between two electrodes, forms the loop, and electric energy is converted into heat energy, and the PTC exothermic material is heated up.The fail safe of PTC core band and stability have determined quality from the temperature control accompanying-heat cable, and fail safe and stability mainly are to be determined by the two contact resistance of ptc material performance and material and electrode.When the performance of ptc material reaches the certain mass requirement, and other technology be can not improve the time, and the performance of PTC core band is mainly determined by contact resistance.Because general ptc material is different with the two material coefficient of thermal expansion coefficient of electrode, and electrode surface and heater are physics and electrically contact, the adhesive force of the two is little, when the energising after, moment starting current bigger, because temperature gradient is arranged, electrode and heater can not act synergistically and easily break away from the formation gap, cause the increase and the fluctuation thereof of contact resistance, and can cause the interface spark, destroy the composition of ptc material, and contact resistance is increased; In energising heating next time, cooling procedure, further increase contact resistance, so circulation causes the cable resistance value constantly to increase, and PTC effect and electricity-thermal conversion function fails gradually, product quality and stability decreases, and the expansion of spending with low baking temperature has the possibility of catching fire.Therefore starting current is low, contact resistance is stable is from fail safe of temperature control accompanying-heat cable and stable important prerequisite.
The main method and the technology that improve in the market from temperature control accompanying-heat cable quality are to improve the performance of ptc material, are to reduce starting current by changing prescription as Chinese patent application " a kind of macromolecular self-regulating heating tape " application number CN200910210502.6; " the self controlled heating cable resin combination " of China Petrochemical Corporation's application, the patent No. is CN97119459.9, is to improve the cementability of material and electrode by adding cementitious material.Also have by conductive electrode is carried out structure of modification to improve the quality of products, as the clear 63-32886 of patent application JP of Sumitomo Electrics Industry Ltd and the clear 58-106787 of patent application JP of Hitachi Cable Ltd., be that the resistance stability that one deck low electrical resistant material improves system is set between electrode and ptc material; The flat 6-13165 of the open patent of Panasonic Electric Equipment Industrial Co.,Ltd (or JP6013165A) thus adopt the conductive elastomer electrode to improve the cementability raising resistance stability of ptc material and electrode; The Chinese patent of Panasonic Electric Equipment Industrial Co.,Ltd's application " PTC thermistor electrode and manufacture method and PTC thermistor ", patent No. CN99123909.1, be on electrode, to form the sinter layer that one deck has conductivity by the sintering electroconductive powder, the surface has concaveconvex shape, and then the bonding force of raising ptc material and electrode, reduce contact resistance value, and can improve the stability of contact resistance; " containing the conducting polymer electric device " patent JP2788968 of U.S. RAYCHEM company handles the stability that makes electrode surface have concaveconvex shape and then improve contact resistance by electro-deposition.
Though said method respectively has advantage, can not significantly reduce simultaneously starting current and improve the stability of contact resistance, perhaps there are complex process, problem that cost is high, its application is restricted.
Summary of the invention
The purpose of this utility model is to provide the semiconductive macromolecule copper-clad electrode of the new structure that a kind of starting current is little, contact resistance is stable from the temperature control accompanying-heat cable.
The technical scheme that the utility model adopted is: this semiconductive macromolecule copper-clad electrode is from the temperature control accompanying-heat cable, comprise two conductive electrodes, ptc layer, insulating barrier, metal screen layer and restrictive coatings, two conductive electrodes are parallel to each other, be located in the ptc layer, outside at ptc layer is provided with insulating barrier, metal screen layer and restrictive coating successively, it is characterized in that: be provided with intermediate resistor layer on every conductive electrode, intermediate resistor layer is arranged in ptc layer.
The utility model is also implemented by following measure: described conductive electrode is the copper cash conductive electrode of the zinc-plated or nickel plating of strands, generally forms by the 3-37 core is stranded.
Described ptc layer is heater, is made by common PTC, fire-retardant PTC or fluorine-containing ptc material.
Described intermediate resistor layer is by being that the crosslinkable semiconductive macromolecular material that matrix is made through modification is made with thermoplastics, thermoplastic elastomer (TPE) or fluoroplastics, and the specific insulation of described semiconductive macromolecular material is 10
2～10
6Ω cm should be far above ptc material, the resistive layer resistance of formation should greater than or be equivalent to the resistance of ptc layer, the PTC intensity of semiconductive macromolecular material is less than 1.0,200 ℃ oxidation induction period (OIT) of semiconductive macromolecular material is greater than 100min.
Described insulating barrier and restrictive coating are made by PE, Teflon FEP or PVDF material.
Described metal screen layer is aluminum-magnesium alloy wire, tinned copper wire, tin-coated copper plated aluminium alloy silk or other metal wire knitted web frame, and coverage density is greater than 80%.
Above-mentioned semiconductive macromolecule copper-clad electrode is from the manufacture method of temperature control accompanying-heat cable, it is characterized in that: it may further comprise the steps: (1), extruded by an extruder at two conductive electrode skins and to coat one deck semiconductive macromolecular material as intermediate resistor layer, extrude outside intermediate resistor layer by another extruder simultaneously and lay ptc layer, form PTC core band; (2), with the PTC core band made behind heat treatment and cross-linking radiation, extrude the coated insulation layer at PTC core band skin, and then through high-speed knitter braiding layer of metal screen, extrude at last and coat the upper jacket layer, finally make semiconductive macromolecule copper-clad electrode from the temperature control accompanying-heat cable.
Because semiconductive macromolecular material and ptc material are coextrusion under molten condition, bonding force is very big, contact resistance is stable, intermediate resistor layer resistance at room temperature greater than or be equivalent to the resistance of ptc layer, and intermediate resistor layer resistance and ptc layer resistance form cascaded structure, therefore all-in resistance is more much higher than the resistance of common PTC core band, and the cable starting current reduces; Raising along with temperature, the intermediate resistor layer resistance variations is less, and ptc layer resistance increases, thereby the both end voltage of ptc layer constantly increases, the intermediate resistor layer both end voltage constantly reduces, temperature continues to improve, near operating temperature, the specific insulation of ptc layer is more than several times of intermediate resistor layer, its resistance is much larger than intermediate resistor layer resistance, and the both end voltage of ptc layer reaches maximum, near supply voltage, system voltage, all-in resistance, heating temp reach balance, and the self-regulating performance of cable is unaffected substantially.
The beneficial effects of the utility model are: novel structure, produce simply, the starting current of cable is little, and temperature control performance is stable, can be widely used on the engineerings such as tracing thermal-insulating of departments such as oil, chemical industry, light industry, agricultural byproducts processing.
Description of drawings
Fig. 1 is a structure section generalized section of the present utility model;
Among the figure: 1, conductive electrode; 2, intermediate resistor layer; 3, ptc layer; 4, insulating barrier; 5, metal screen layer; 6, restrictive coating.
Embodiment
Make the utility model with reference to accompanying drawing 1.A kind of semiconductive macromolecule copper-clad electrode is from the temperature control accompanying-heat cable, comprise two conductive electrodes 1, ptc layer 3, insulating barrier 4, metal screen layer 5 and restrictive coating 6, two conductive electrodes 1 are parallel to each other, be located in the ptc layer 3, be provided with insulating barrier 4, metal screen layer 5 and restrictive coating 6 successively in the outside of ptc layer 3, it is characterized in that: be provided with intermediate resistor layer 2 on every conductive electrode 1, intermediate resistor layer 2 is arranged in ptc layer 3.
Described conductive electrode 1 is the tinned wird conductive electrode of strands, generally forms by the 3-37 core is stranded.
Described ptc layer 3 is heater, is made by common ptc material.
Described intermediate resistor layer 2 is by being that the crosslinkable semiconductive macromolecular material that matrix is made through modification is made with the thermoplastics, and the specific insulation of described semiconductive macromolecular material is 4 * 10
3Ω cm, the PTC intensity of semiconductive macromolecular material is 0.85,200 ℃ oxidation induction period (OIT) of semiconductive macromolecular material is 140min.
Described insulating barrier 4 and restrictive coating 6 are made by the PE material.
Described metal screen layer 5 is the aluminum-magnesium alloy wire woven mesh structure, and coverage density is 81%.
Above-mentioned semiconductive macromolecule copper-clad electrode is from the manufacture method of temperature control accompanying-heat cable, it is characterized in that: it may further comprise the steps: (1), extruded by an extruder at two conductive electrode 1 skins and to coat one deck semiconductive macromolecular material as intermediate resistor layer 2, extrude outside intermediate resistor layer 2 by another extruder simultaneously and lay ptc layer 3, form PTC core band; (2), with the PTC core band made behind heat treatment and cross-linking radiation, extrude coated insulation layer 4 at PTC core band skin, and then through high-speed knitter braiding layer of metal screen 5, extrude at last and coat upper jacket layer 6, finally make semiconductive macromolecule copper-clad electrode from the temperature control accompanying-heat cable.
A kind of semiconductive macromolecule copper-clad electrode is from the temperature control accompanying-heat cable, comprise two conductive electrodes 1, ptc layer 3, insulating barrier 4, metal screen layer 5 and restrictive coating 6, two conductive electrodes 1 are parallel to each other, be located in the ptc layer 3, be provided with insulating barrier 4, metal screen layer 5 and restrictive coating 6 successively in the outside of ptc layer 3, it is characterized in that: be provided with intermediate resistor layer 2 on every conductive electrode 1, intermediate resistor layer 2 is arranged in ptc layer 3.
Described conductive electrode 1 is the copper cash conductive electrode of the nickel plating of strands.
Described ptc layer 3 is heater, is made by fire-retardant ptc material.
Described intermediate resistor layer 2 is by being that the crosslinkable semiconductive macromolecular material that matrix is made through modification is made with the thermoplastic elastomer (TPE), and the specific insulation of described semiconductive macromolecular material is 5 * 10
2Ω cm, the PTC intensity of semiconductive macromolecular material is 0.8,200 ℃ oxidation induction period (OIT) of semiconductive macromolecular material is 180min.
Described insulating barrier 4 and restrictive coating 6 are made by Teflon FEP material.
Described metal screen layer 5 is the tinned copper wire woven mesh structure, and coverage density is greater than 81%.
Above-mentioned semiconductive macromolecule copper-clad electrode is from the manufacture method of temperature control accompanying-heat cable, and is identical with embodiment 1.
A kind of semiconductive macromolecule copper-clad electrode is from the temperature control accompanying-heat cable, comprise two conductive electrodes 1, ptc layer 3, insulating barrier 4, metal screen layer 5 and restrictive coating 6, two conductive electrodes 1 are parallel to each other, be located in the ptc layer 3, be provided with insulating barrier 4, metal screen layer 5 and restrictive coating 6 successively in the outside of ptc layer 3, it is characterized in that: be provided with intermediate resistor layer 2 on every conductive electrode 1, intermediate resistor layer 2 is arranged in ptc layer 3.
Described conductive electrode 1 is the zinc-plated copper cash conductive electrode of strands.
Described ptc layer 3 is heater, is made by fluorine-containing ptc material.
Described intermediate resistor layer 2 is by being that the crosslinkable semiconductive macromolecular material that matrix is made through modification is made with fluoroplastics, and the specific insulation of described semiconductive macromolecular material is 1 * 10
5Ω cm, the PTC intensity of semiconductive macromolecular material is 0.9,200 ℃ oxidation induction period (OIT) of semiconductive macromolecular material is 160min.
Described insulating barrier 4 and restrictive coating 6 are made by the PVDF material.
Described metal screen layer 5 is a tin-coated copper plated aluminium alloy silk woven mesh structure, and coverage density is greater than 81%.
Above-mentioned semiconductive macromolecule copper-clad electrode is from the manufacture method of temperature control accompanying-heat cable, and is identical with embodiment 1.
Claims (1)
1. a semiconductive macromolecule copper-clad electrode is from the temperature control accompanying-heat cable, comprise two conductive electrodes (1), ptc layer (3), insulating barrier (4), metal screen layer (5) and restrictive coating (6), two conductive electrodes (1) are parallel to each other, be located in the ptc layer (3), be provided with insulating barrier (4), metal screen layer (5) and restrictive coating (6) successively in the outside of ptc layer (3), it is characterized in that: be provided with intermediate resistor layer (2) on every conductive electrode (1), intermediate resistor layer (2) is arranged in ptc layer (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200601734U CN201937865U (en) | 2011-03-10 | 2011-03-10 | Automatic temperature controlled heat tracing cable for semi-conductive high polymer copper electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200601734U CN201937865U (en) | 2011-03-10 | 2011-03-10 | Automatic temperature controlled heat tracing cable for semi-conductive high polymer copper electrode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201937865U true CN201937865U (en) | 2011-08-17 |
Family
ID=44449366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200601734U Expired - Lifetime CN201937865U (en) | 2011-03-10 | 2011-03-10 | Automatic temperature controlled heat tracing cable for semi-conductive high polymer copper electrode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201937865U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102170717A (en) * | 2011-03-10 | 2011-08-31 | 山东科虹线缆有限公司 | Automatic temperature control and heat-tracing cable with semi-conducting polymer copper-cladding electrodes and method for making the same |
-
2011
- 2011-03-10 CN CN2011200601734U patent/CN201937865U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102170717A (en) * | 2011-03-10 | 2011-08-31 | 山东科虹线缆有限公司 | Automatic temperature control and heat-tracing cable with semi-conducting polymer copper-cladding electrodes and method for making the same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102170717B (en) | Automatic temperature control and heat-tracing cable with semi-conducting polymer copper-cladding electrodes and method for making the same | |
| AU607666B2 (en) | Flexible, elongated positive temperature coefficient heating assembly and method | |
| CN102573154B (en) | Self temperature limiting heat tracing strip of PTC (positive temperature coefficient) high polymer conductive composite material and preparation method thereof | |
| CN1471462A (en) | Thermal textile | |
| RU2014113468A (en) | INTELLECTUAL HEATING CABLE HAVING INTELLECTUAL FUNCTION AND METHOD FOR PRODUCING THIS CABLE | |
| CN205179392U (en) | Fabric formula electric heat membrane | |
| CN109379793A (en) | A kind of high-temperature boiler temperature selflimiting electric tracing band | |
| CN203311906U (en) | Novel PPEK insulated special cable | |
| CN201937865U (en) | Automatic temperature controlled heat tracing cable for semi-conductive high polymer copper electrode | |
| CN106803446B (en) | A kind of aerospace high temperature-resistant cable | |
| CN202679676U (en) | Self-limiting-type ribbon heater | |
| CN206003529U (en) | A kind of silicone rubber high pressure lead wire | |
| CN201408596Y (en) | Compensation cable for temperature-resistant thermocouple | |
| CN202488789U (en) | Self-limiting temperature heat belt for PTC (Positive Temperature Coefficient) polymer conductive composite | |
| CN205320316U (en) | Double electric heating cable of carbon fiber | |
| KR20160118849A (en) | Resistance adjustable carbon fiber heating element | |
| CN201937862U (en) | Heat tracing belt for solar water heater | |
| CN209767852U (en) | Graphene heating cable | |
| CN2478302Y (en) | Carbon fiber electrothermal cord | |
| CN204348360U (en) | A kind of intelligent self-heating multicore Plastic-sheathed Cable | |
| CN203327270U (en) | Intelligent temperature self-regulating heat tracing cable for oil-gas pipeline | |
| CN202307215U (en) | Oil and high-temperature resistant flame retardant thin-wall locomotive cable | |
| CN207742974U (en) | A kind of power grid heat-resistant fireproof cable | |
| RU153873U1 (en) | ELECTRIC HEATING ELEMENT | |
| RU2187906C1 (en) | Method for manufacturing composite flexible electric surface heater |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHANDONG KEHONG WIRE + CABLE TECHNOLOGY CO., LTD. Free format text: FORMER NAME: SHANDONG KEHONG WIRE + CABLE CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 271110 government residence of Laicheng district and Zhuang Township, Shandong City, Laiwu Province Patentee after: SHANDONG KEHONG WIRE & CABLE TECHNOLOGY Co.,Ltd. Address before: 271110 government residence of Laicheng district and Zhuang Township, Shandong City, Laiwu Province Patentee before: SHANDONG KEHONG WIRE & CABLE Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 271110 Residence of Laiwu District and Zhuangzhen Town, Jinan City, Shandong Province Patentee after: Shandong Zhengtai Cable Co.,Ltd. Address before: 271110 Residence of Hezhuang Town and Laicheng District, Laiwu City, Shandong Province Patentee before: SHANDONG KEHONG WIRE & CABLE TECHNOLOGY CO.,LTD. Address after: 271110 Residence of Hezhuang Town and Laicheng District, Laiwu City, Shandong Province Patentee after: SHANDONG KEHONG WIRE & CABLE TECHNOLOGY CO.,LTD. Address before: 271110 government residence of Laicheng district and Zhuang Township, Shandong City, Laiwu Province Patentee before: SHANDONG KEHONG WIRE & CABLE TECHNOLOGY Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110817 |