CN203523069U - Coated-type temperature self-controlled heat tracing cable - Google Patents
Coated-type temperature self-controlled heat tracing cable Download PDFInfo
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- CN203523069U CN203523069U CN201320681276.1U CN201320681276U CN203523069U CN 203523069 U CN203523069 U CN 203523069U CN 201320681276 U CN201320681276 U CN 201320681276U CN 203523069 U CN203523069 U CN 203523069U
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- heat tracing
- controlled heat
- coated
- tracing cable
- heating layer
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Abstract
A coated-type temperature self-controlled heat tracing cable comprises two conductive electrodes, a heating layer wrapped outside the conductive electrodes, an insulation layer wrapped outside the heating layer and a sheath layer wrapped outside the insulation layer. The coated-type temperature self-controlled heat tracing cable is wholly in a circular ring shape and there is one breaking place. The heating layer, the insulation layer and the sheath layer are respectively in a circular ring shape with a breaking port. The two conductive electrodes are symmetrically and internally arranged at the two sides of the breaking place of the heating layer. A conventional flat shape is changed into a circular ring shape with the port; and after improvement, the pipeline coating method is changed from a sparsely-wound manner to a longitudinally-wrapped manner. Compared with the prior art, the coated-type temperature self-controlled heat tracing cable has the following advantages: 1) compared with the conventional sparsely-wound manner, the longitudinally-wrapped manner does not need complicated thermodynamic calculation; 2) heating stability and uniformity of the cable are better than a conventional temperature self-controlled heat tracing cable; and 3) the service life of the cable is improved greatly.
Description
Technical field
The utility model relates to a kind of cable, relates in particular to a kind of cladded type automatic temperature-controlled heat tracing cable.
Background technology
Along with the development of industrialization pipe transportation technology, " steam jacket " this anti-freezing and heat-insulating mode is difficult to meet the long demand apart from conveying crude oil, aqueous industrial chemicals and water for industrial use gradually.Therefore, the U.S. develops automatic temperature-controlled heat tracing cable the earliest, be exclusively used in the anti-freezing and heat-insulating of liquid conducting pipes, the heater that this cable utilization has ptc characteristics heats pipeline, the resistance value of this heater can increase along with temperature rises, make failure of current, volitional check output, keeps constant by pipe temperature.China in last century the eighties start to develop automatic temperature-controlled heat tracing cable, now existing a lot of producers can produce this cable, product is widely used in oil, chemical industry, cogeneration power plant etc. need to prevent the place that liquid substance solidifies or flowing velocity is slow in pipeline or tank, the companion's heat that is mainly used in fire protection pipeline aspect communal facility can be used for heating of house and the antifreeze aspect of yard piping in winter aspect civilian.
The automatic temperature-controlled heat tracing cable of Modern Significance must possess two large features: the first, and can in any length, block and do not affect use, therefore laying installation is convenient; The second, can carry out in any point self-temperature adjusting, even conveyance conduit the regional environment condition of process different, cable also can be made a response to the difference of ambient temperature or variation, self-temperature adjusting is carried out in segmentation, thereby makes pipe temperature consistent.For realizing above-mentioned functions, both at home and abroad the structure of automatic temperature-controlled heat tracing cable mostly adopts two or many parallel conductive electrodes to be positioned in PTC core band, the supplementary structure such as coated insulation, shielding and sheath afterwards, whole cable is flat and dredges to be around on pipeline pipeline is heated.Its action principle is: electric current forms loop through the heater between two electrodes (ptc material) to another root conductive electrode by a conductive electrode, electric energy heats up heater, its resistance increases simultaneously, when the temperature of heart yearn rises to after certain value, resistance is large to suitable with insulator rapidly, can be with blocking-up electric current, at this moment, the temperature of heater no longer raises.Meanwhile, core band conducts heat to the lower heated object of temperature by sheath, until heating object temperature during close to the temperature of core band, conducts heat and almost stops, power levels off to zero, makes the basicly stable Curie temperature at ptc material of heating object temperature (being sudden change of resistivity temperature) left and right.
Because being dredges around heating, so need carry out to the heat radiation of cable the temperature uniformity of the very complicated whole pipeline of calculating guarantee, continuous increase along with running time, the Curie temperature of heating tape reduces gradually, heat radiation during initial design is calculated basis and is broken, cause later stage pipe temperature inhomogeneities to increase gradually, this is one of key factor affecting heating tape useful life.Therefore, be necessary existing structure to improve, to increase stability and the useful life of automatic temperature-controlled heat tracing cable.
Summary of the invention
The purpose of this utility model is to provide a kind of automatic temperature-controlled heat tracing cable that can address the above problem.
For achieving the above object, the solution that the utility model is taked is: a kind of cladded type automatic temperature-controlled heat tracing cable, it comprises two conductive electrodes, be coated on heating layer outside conductive electrode, be coated on insulating barrier outside heating layer and the restrictive coating outside coated insulation layer, its integral body is circular and has a place to disconnect, heating layer, insulating barrier, restrictive coating are the circular ring with fracture, and two conductive electrodes are symmetrically placed in the inner gap of heating layer both sides.
This kind of automatic temperature-controlled heat tracing cable changes the circular of port into by traditional flat, and after improvement, the mode of its coated pipeline will be by dredging around changing vertical bag into.It compared with prior art has following some advantage: (1) is dredged and compared around mode with tradition, and vertical packet mode is without carrying out complicated calculation of thermodynamics; (2) cable add thermal stability and uniformity is all better than traditional automatic temperature-controlled heat tracing cable; (3) cable is greatly improved useful life.
Accompanying drawing explanation
Fig. 1 is the cross-sectional view of the present embodiment.
In figure: 1, conductive electrode, 2, heating layer, 3, insulating barrier, 4, restrictive coating
Embodiment
Below in conjunction with illustrative embodiments and accompanying drawing thereof, further illustrate the utility model, but embodiment should not be construed as to concrete restriction of the present utility model.
Referring to Fig. 1, a kind of cladded type automatic temperature-controlled heat tracing cable, it comprises two conductive electrodes 1, be coated on heating layer 2 outside conductive electrode 1, be coated on insulating barrier 3 outside heating layer 2 and the restrictive coating 4 outside coated insulation layer 3, its integral body is circular and has a place to disconnect, heating layer 2, insulating barrier 3, restrictive coating 4 are the circular ring with fracture, and two conductive electrodes 1 are symmetrically placed in the inner gap of heating layer 2 both sides.
Referring to Fig. 1, described conductive electrode 1 is copper conductor.
Referring to Fig. 1, described heating layer 2 is polyvinyl PTC materials.
Referring to Fig. 1, described insulating barrier 3 and the material of restrictive coating 4 are polythene material.
The above is only preferred implementation of the present utility model, for those skilled in the art, not departing under the prerequisite of the utility model principle, can also make some improvement, and these improvement also should be considered as protection range of the present utility model.
Claims (4)
1. a cladded type automatic temperature-controlled heat tracing cable, it comprises two conductive electrodes (1), is coated on the outer heating layer (2) of conductive electrode (1), is coated on the outer insulating barrier (3) of heating layer (2) and the outer restrictive coating (4) of coated insulation layer (3), it is characterized in that: its integral body is circular and has a place to disconnect, heating layer (2), insulating barrier (3), restrictive coating (4) are the circular ring with fracture, and two conductive electrodes (1) are symmetrically placed in the inner gap of heating layer (2) both sides.
2. a kind of cladded type automatic temperature-controlled heat tracing cable according to claim 1, is characterized in that: described conductive electrode (1) is copper conductor.
3. a kind of cladded type automatic temperature-controlled heat tracing cable according to claim 1, is characterized in that: described heating layer (2) is polyvinyl PTC material.
4. a kind of cladded type automatic temperature-controlled heat tracing cable according to claim 1, the material of described insulating barrier (3) and restrictive coating (4) is polythene material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320681276.1U CN203523069U (en) | 2013-10-24 | 2013-10-24 | Coated-type temperature self-controlled heat tracing cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320681276.1U CN203523069U (en) | 2013-10-24 | 2013-10-24 | Coated-type temperature self-controlled heat tracing cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203523069U true CN203523069U (en) | 2014-04-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320681276.1U Expired - Fee Related CN203523069U (en) | 2013-10-24 | 2013-10-24 | Coated-type temperature self-controlled heat tracing cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203523069U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103547003A (en) * | 2013-10-24 | 2014-01-29 | 兴乐电缆有限公司 | Cladding type self-temperature-control heat tracing cable |
-
2013
- 2013-10-24 CN CN201320681276.1U patent/CN203523069U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103547003A (en) * | 2013-10-24 | 2014-01-29 | 兴乐电缆有限公司 | Cladding type self-temperature-control heat tracing cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Patent of xingle Cable Co.,Ltd. The person in charge Document name: payment instructions |
|
| DD01 | Delivery of document by public notice | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140402 Termination date: 20211024 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |