CN101545812A - Automatic tracking surface temperature sensor - Google Patents
Automatic tracking surface temperature sensor Download PDFInfo
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- CN101545812A CN101545812A CN200910098190A CN200910098190A CN101545812A CN 101545812 A CN101545812 A CN 101545812A CN 200910098190 A CN200910098190 A CN 200910098190A CN 200910098190 A CN200910098190 A CN 200910098190A CN 101545812 A CN101545812 A CN 101545812A
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- temperature
- temperature sensor
- thermopair
- protective sleeve
- thermo wires
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Abstract
The invention relates to an automatic tracking surface temperature sensor, which comprises a protective sleeve and a thermocouple consisting of an anode coupling wire and a cathode coupling wire. The anode coupling wire and the cathode coupling wire are placed in the protective sleeve and the two coupling wires are in a separate state all the time, and the peripheries of the anode coupling wire and the cathode coupling wire are filled with manganese-based oxide powder with definite thermoelectric property. The anode coupling wire and the cathode coupling wire are metal wires generally made of different materials, the protective sleeve is generally a metal sleeve, and the manganese-based oxide powder has the following thermoelectric property: when the temperature is less than 155 DEG C, the powder is not conductive basically; and when the temperature is more than or equal to 155 DEG C, the powder is conductive, and the electric conductivity is better if the temperature is higher. A plurality of the thermocouples with the protective sleeves are pulled with a definite diameter and connected in series to form a temperature sensor of 1 to 500 meters or longer according to the design requirement, and thermocouple series pieces with the protective sleeves are entwined and embedded in a temperature measuring layer on the surface of a device or a pipe and can also be placed in a device or a pipe with medium or airflow to measure temperature so as to automatically track, measure and monitor the device or pipe surface or the internal medium or airflow temperature.
Description
Technical field
The present invention relates to a kind of temperature sensor, relate in particular to a kind of thermocouple temperature sensor of automatic tracking surface temperature, be applied to the thermometric temperature sensor of the surface of chemical plant and pipeline and interior media etc.
Background technology
Flourish along with industry such as China's oil chemical industry, Coal Chemical Industry in recent years will carry out thermometric control at the equipment of key and pipe surface and just can ensure safety in production, and guarantees personnel's safety of life and property.Special equipment gasification burner in Chemical Manufacture, because temperature is about 1350 ℃ in the gasification furnace, pressure 8.0～9.0MPa, long-time running stove inwall damages, temperature conduction is to outside surface, and temperature is too high, the deliquescing of outer wall steel plate, cause substantial equipment security incidents such as blast under the internal pressure effect, therefore monitoring the gasification burner surface temperature at any time seems very necessary.
The thermocouple temperature sensor that uses mainly comprises protective sleeve and thermopair at present; thermopair is welded into a point by two both positive and negative polarity thermo wires (tinsel); fill magnesium oxide powder around it and place protective sleeve, magnesium oxide powder is used between the both positive and negative polarity thermo wires and the insulating effect between thermo wires and the protective sleeve.The thermocouple measuring temperature of this structure, a thermopair can only be measured a point, if thermometric is all wanted on whole chemical plant surface, promptly all can not accomplish measurement and monitoring with thousands of thermopairs possibly to equipment surface every bit temperature, therefore, existing thermocouple temperature sensor can't satisfy the temperature survey of equipment and the whole surface area of pipeline.
Summary of the invention
Technical matters to be solved by this invention provide a kind of can be to the temperature sensor of the arbitrary place's area measurement in monitored surface temperature, to adapt to the automatic tracing and measuring and the monitoring of various chemical plants and pipe surface and interior media equitemperature.
The technical solution adopted in the present invention is: a kind of automatic tracking surface temperature sensor; comprise protective sleeve and the thermopair of forming by anodal thermo wires and negative pole thermo wires; described anodal thermo wires and negative pole thermo wires place protective sleeve and two thermo wires to be in separated position all the time, and filling has the manganese-base oxide powder of certain thermoelectricity capability around anodal thermo wires and the negative pole thermo wires.Anodal thermo wires and negative pole thermo wires are generally the tinsel of different materials; protective sleeve is generally metal sleeve, and selected manganese-base oxide powder has following thermoelectricity capability, and is non-conductive substantially when temperature＜155 ℃; conduction when temperature 〉=155 ℃, and temperature high conduction performance is good more more.
Some the above-mentioned thermopairs that have protective sleeve (being generally metal sleeve) can be drawn into certain diameter and make 1-500 meters or a longer temperature sensor by the designing requirement series connection; the thermopair series connection part travelling expenses of band protective sleeve are embedded in the thermometric layer of equipment or pipe surface, with automatic tracing and measuring and monitoring equipment or pipe surface temperature.Also can place the equipment of medium or air-flow or pipeline to measure temperature the thermopair series connection part of band protective sleeve.
Because the both positive and negative polarity thermo wires of temperature sensor of the present invention is in separated position all the time, and realize isolation with a kind of manganese-base oxide powder with particular thermal electrical property.During in normal temperature or temperature＜155 ℃, inner stuffing manganese-base oxide insulation resistance is big, isolates between the positive and negative thermo wires, does not produce thermoelectrical potential; When certain section of equipment or pipeline or the rising of certain some temperature reach 155 ℃, inner stuffing manganese-base oxide resistance can reduce, because the reduction of inner stuffing insulation resistance, be tending towards conducting between the positive and negative thermo wires, produce thermoelectrical potential, and temperature high conduction performance is good more more, when temperature continued to be elevated to 220 ℃, the inner stuffing insulation resistance approached zero.The thermoelectrical potential signal of output is delivered directly to secondary instrument or computing machine, or joins temperature transmitter, becomes amplification signal by temperature and changes digital signal (4～20mA) into.Because this temperature sensor neither one fixed-node (check point), therefore, establish one tens meters in that equipment or pipe surface are auxilliary, even during the thermocouple wire of many meters long of hundreds ofs, when the rising of any place area occupied temperature reaches monitoring temperature in the long scope of hundreds of, this novel temperature sensor just can be surveyed and output signal from motion tracking, so the long scope of hundreds of rice only need be laid a signal conductor, has just realized the surface temperature measurement in the certain limit.And the positive and negative thermocouple wire of the thermopair of this temperature sensor can be embedded in the heat-insulation layer with equipment surface together with protective sleeve; do not see the temperature survey point from outside surface; bring convenience to insulation of equipment, and overall appearance, need not consider that causing distributing heat energy owing to insulation is bad wastes energy.The present invention is particularly useful for the surface of chemical plant and pipeline and the temperature survey and the monitoring of interior media or air-flow.
The invention will be further described below in conjunction with drawings and Examples.
Description of drawings
Fig. 1 is an embodiment of the present invention one-piece construction synoptic diagram;
Fig. 2 is a thermopair sectional view among Fig. 1;
Fig. 3 is a kind of wiring synoptic diagram that the present invention is applied to chemical plant.
Embodiment
As shown in Figure 1, 2, a kind of embodiment automatic tracking surface temperature sensor of the present invention, mainly form by thermopair 1, edge connector 4, anode plug 2, cathode plug 3, terminal box 5, electric interfaces 6 and web member etc., cathode metal silk 8 and negative pole tinsel 9 place metal sleeve 10, and cathode metal silk 8 and negative pole tinsel 9 are in separated position all the time, and filling manganese-base oxide powder 7 is realized isolating around cathode metal silk 8 and the negative pole tinsel 9.Selected manganese-base oxide powder has following thermoelectricity capability, and is non-conductive substantially when temperature＜155 ℃, is tending towards conduction when temperature 〉=155 ℃, and temperature high conduction performance is good more more.
Shown in Figure 3 is a kind of application example of the present invention; a kind of chemical plant with surface temperature measurement layer, the thermopair that travelling expenses are embedded with by the several strips protective sleeve in the surface temperature measurement layer is drawn into certain diameter parallel-series temperature sensor (being temperature-measuring range among the figure in the dotted line) together.During equipment work, when equipment section or certain some temperature rising reach 155 ℃, be tending towards conducting between the positive and negative thermo wires, and approximate value thermoelectrical potential signal is arranged.When temperature continues to be elevated to 220 ℃, complete path produces the thermoelectrical potential signal between the positive and negative thermo wires, the heat outputting electric potential signal is delivered directly to secondary Displaying Meter or counter, or joins temperature transmitter, becomes amplification signal by temperature and changes digital signal (4～20mA) into.Equally, the present invention also can be embedded in the pipeline with surface temperature measurement layer by travelling expenses, with the automatic tracing and monitoring to the pipe surface temperature.Simultaneously also can place the equipment of medium and air-flow or pipeline to measure temperature.
Claims (7)
1, a kind of automatic tracking surface temperature sensor; comprise protective sleeve and the thermopair of forming by anodal thermo wires and negative pole thermo wires; it is characterized in that described anodal thermo wires and negative pole thermo wires place protective sleeve and two thermo wires to be in separated position all the time, filling manganese-base oxide powder around anodal thermo wires and the negative pole thermo wires.
2, automatic tracking surface temperature sensor according to claim 1 is characterized in that described protective sleeve is a metal sleeve.
3, automatic tracking surface temperature sensor according to claim 1 and 2 is characterized in that described manganese-base oxide powder has following thermoelectricity capability, and is ℃ non-conductive substantially when temperature＜155, is tending towards conduction when temperature 〉=155 ℃.
4, a kind of equipment with surface temperature measurement layer; it is characterized in that comprising that the thermopair by some band protective sleeves as claimed in claim 1 or 2 is drawn into certain diameter parallel-series temperature sensor together, the thermopair series connection part travelling expenses of described band protective sleeve are embedded in the thermometric layer of equipment surface.
5, a kind of pipeline with surface temperature measurement layer; it is characterized in that comprising that the thermopair by some band protective sleeves as claimed in claim 1 or 2 is drawn into certain diameter parallel-series temperature sensor together, the thermopair series connection part travelling expenses of described band protective sleeve are embedded in the thermometric layer of pipe surface.
6, a kind of equipment with medium or air-flow; it is characterized in that comprising that the thermopair by some band protective sleeves as claimed in claim 1 or 2 is drawn into certain diameter parallel-series temperature sensor together, the thermopair series connection part of described band protective sleeve places the medium or the air-flow of equipment.
7, a kind of pipeline with medium or air-flow; it is characterized in that comprising that the thermopair by some band protective sleeves as claimed in claim 1 or 2 is drawn into certain diameter parallel-series temperature sensor together, the thermopair series connection part of described band protective sleeve places the medium or the air-flow of pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910098190A CN101545812A (en) | 2009-05-04 | 2009-05-04 | Automatic tracking surface temperature sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910098190A CN101545812A (en) | 2009-05-04 | 2009-05-04 | Automatic tracking surface temperature sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101545812A true CN101545812A (en) | 2009-09-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910098190A Pending CN101545812A (en) | 2009-05-04 | 2009-05-04 | Automatic tracking surface temperature sensor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112596558A (en) * | 2020-12-25 | 2021-04-02 | 航电中和山东医疗技术有限公司 | Heating pipe temperature monitoring device and method |
-
2009
- 2009-05-04 CN CN200910098190A patent/CN101545812A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112596558A (en) * | 2020-12-25 | 2021-04-02 | 航电中和山东医疗技术有限公司 | Heating pipe temperature monitoring device and method |
| CN112596558B (en) * | 2020-12-25 | 2022-06-28 | 航电中和山东医疗技术有限公司 | Heating pipe temperature monitoring device and method |
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Open date: 20090930 |