CN2247269Y - Automatic temp.-controlled heating pipe - Google Patents
Automatic temp.-controlled heating pipe Download PDFInfo
- Publication number
- CN2247269Y CN2247269Y CN 95226406 CN95226406U CN2247269Y CN 2247269 Y CN2247269 Y CN 2247269Y CN 95226406 CN95226406 CN 95226406 CN 95226406 U CN95226406 U CN 95226406U CN 2247269 Y CN2247269 Y CN 2247269Y
- Authority
- CN
- China
- Prior art keywords
- pipe
- ptc
- tubing
- heating pipe
- temperature control
- 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 - Fee Related
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Abstract
The utility model relates to an automatic temperature controlled heating pipe, which is composed of a PTC pipe material, two metal conducting wires which are arranged in the pipe wall of the PTC pipe material and are parallel with the central axis of the pipe material, and a thermal insulation protective layer which coats the pipe material. The utility model has the advantages of simple structure, low cost, automatic heating and automatic temperature control to materials which are conveyed in the pipe, and the long service life of a material conveying pipeline which is built. Failures and damage can not occur easily.
Description
The utility model relates to a kind of tubing.
In industrial production, liquid, gas material adopt line transportation usually, for some easy lime set bodies and gas or the material that requires to carry keeps the feeding pipe and the outdoor pipeline that lays of certain material temperature in the open, for the generation that prevents its condensation with freeze winter with line clogging, feeding pipe is all built with the tubing with heating muff, and will pipeline be wrapped insulation with thermal insulating material.Because the heating arrangement of pipeline and the external diameter that insulation makes pipeline are very big to latus rectum ratio, promptly the material latus rectum is very little and outer diameter tube is very big, and this space that pipeline is occupied is big, construction trouble, and cost height.For some occasion, as the drilling fluid sample in the petroleum exploration instrument and sample gas pipeline one generic request feeding pipe has heating and heat preserving function and the limited conveyance conduit of installing space is difficult to adopt common heat tracing pipeline configuration.This class pipeline generally is that the electric furnace heating wire that will wear the insulation porcelain ring is wrapped on the carrier pipe, and the temperature controller of putting with other carries out heat tracing control.Because heater, temperature controller split, make instrument become complicated, use and operate and bring inconvenience to it, the particularly on-the-spot frequent instrument of resettlement that uses easily breaks down or damages and be unfavorable for ensureing and use.Electric furnace heating wire is short working life, needs frequent replacing that the normal use of instrument is affected.
The purpose of this utility model provide a kind of simple in structure, cost is low, particularly external diameter is little to latus rectum ratio, can heat automatically with temperature control from the temperature control heating pipe.PTC (Positive Temperature Coefficient) material is a kind of brand-new material, has electric positive temperature coefficient.Its specific resistance increases with the rising of material temperature, and when material temperature reached a certain temperature, its resistance sharply increased, material is state of insulation, when material temperature its resistance that descends reduces gradually and recovers its electric conductivity.
Constitute from tubing that the temperature control heating pipe is made by ptc material, the heat-protective coating that places the two strip metal leads parallel in the PTC tube material and tube wall and coat PTC tubing with the tubing central axis.
Have good automatic heating and temperature control effect in order to make from the temperature control heating pipe, two strip metal leads are positioned on the same diameter line of PTC tubing and are symmetry axis with the tubing central axis.
Utilization connects two strip metal leads when temperature control heating pipe conveying material with power supply, energising back PTC tube wall promptly becomes circuit load.Along with the lengthening of current"on"time, the continuous heating up of PTC tube wall and conveying material heating in will managing.Along with the continuous rising of tube wall temperature, its resistance constantly increases, and the PTC tube wall is state of insulation and the down circuitry tube wall temperature is no longer risen when reaching a certain temperature.Along with tube wall constantly will manage in material heating, its tube wall temperature constantly descends and makes the tube wall resistance tube wall that constantly descends become conductor again and circuit is connected.With the feeding pipe that builds up from the temperature control heating pipe like this perseveration in course of conveying, thereby realize the automatic heating of pipeline and temperature automatically controlled function, prevented condensing or freezing of conveying material in the pipe.
That the utility model provides is simple from the temperature control heating-pipe structure, cost is low, the external diameter of the feeding pipe that builds up is little to latus rectum ratio, pipeline takes up space little, both be suitable for building general feeding pipe usefulness and also be applicable to limited the using of structure space as sample liquid in the petroleum exploration instrument or sample gas pipeline, thus applied widely.
Accompanying drawing is an embodiment of the present utility model, further specifies the utility model below in conjunction with embodiment.
Fig. 1 is from temperature control heating-pipe structure figure.
Fig. 2 is shown in Figure 1 from temperature control heating pipe sectional view.
As shown in the figure, from the temperature control heating pipe have tubing (4) that the plastics (PTC plastics) of positive temperature coefficient make by specific resistance, place in the PTC plastic tube tube wall parallel with the tubing central axis and be that two strip metal leads (2), (3) of symmetry axis and the heat-insulating protective layer (1) that coats the PTC plastic tube constitute with the tubing central axis.
Claims (2)
1, a kind of from the temperature control heating pipe, the tubing that it is characterized in that being made by ptc material, the heat-insulating protective layer that places the two strip metal leads parallel with the tubing central axis in the PTC tube material and tube wall and coat tubing constitute.
2, described by claim 1 from the temperature control heating pipe, it is characterized in that two strip metal leads in the said PTC of the placing tube material and tube wall are positioned on the same straight line of tubing and be symmetry axis with the central axis of tubing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95226406 CN2247269Y (en) | 1995-11-17 | 1995-11-17 | Automatic temp.-controlled heating pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95226406 CN2247269Y (en) | 1995-11-17 | 1995-11-17 | Automatic temp.-controlled heating pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2247269Y true CN2247269Y (en) | 1997-02-12 |
Family
ID=33872577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95226406 Expired - Fee Related CN2247269Y (en) | 1995-11-17 | 1995-11-17 | Automatic temp.-controlled heating pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2247269Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104807170A (en) * | 2015-05-08 | 2015-07-29 | 华能无锡电热器材有限公司 | Short-circuiting electric heater |
| CN105240651A (en) * | 2015-11-11 | 2016-01-13 | 浙江创想节能科技有限公司 | Detachable insulation box having temperature measurement and electric heat tracing functions |
-
1995
- 1995-11-17 CN CN 95226406 patent/CN2247269Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104807170A (en) * | 2015-05-08 | 2015-07-29 | 华能无锡电热器材有限公司 | Short-circuiting electric heater |
| CN105240651A (en) * | 2015-11-11 | 2016-01-13 | 浙江创想节能科技有限公司 | Detachable insulation box having temperature measurement and electric heat tracing functions |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |