CN103033280B - High-sensitivity thermal-response platinum resistor temperature sensor - Google Patents
High-sensitivity thermal-response platinum resistor temperature sensor Download PDFInfo
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- CN103033280B CN103033280B CN201210552617.5A CN201210552617A CN103033280B CN 103033280 B CN103033280 B CN 103033280B CN 201210552617 A CN201210552617 A CN 201210552617A CN 103033280 B CN103033280 B CN 103033280B
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- thermal
- cap
- platinum resistance
- temperature sensor
- heat
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- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 title claims abstract description 98
- 229910052697 platinum Inorganic materials 0.000 title claims abstract description 49
- 229910052751 metal Inorganic materials 0.000 claims abstract description 47
- 239000002184 metal Substances 0.000 claims abstract description 47
- 230000006698 induction Effects 0.000 claims abstract description 10
- 230000008054 signal transmission Effects 0.000 claims abstract description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 18
- 229910052802 copper Inorganic materials 0.000 claims description 18
- 239000010949 copper Substances 0.000 claims description 18
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 12
- 229910052709 silver Inorganic materials 0.000 claims description 12
- 239000004332 silver Substances 0.000 claims description 12
- 238000009413 insulation Methods 0.000 claims description 7
- 239000011159 matrix material Substances 0.000 claims description 4
- 230000035945 sensitivity Effects 0.000 abstract description 4
- 238000001514 detection method Methods 0.000 abstract description 3
- 230000001939 inductive effect Effects 0.000 abstract 5
- 230000005540 biological transmission Effects 0.000 abstract 1
- 239000000758 substrate Substances 0.000 abstract 1
- 239000000523 sample Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 5
- 230000036413 temperature sense Effects 0.000 description 4
- 239000003292 glue Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 210000004534 cecum Anatomy 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
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- Thermistors And Varistors (AREA)
Abstract
The invention discloses a high-sensitivity thermal-response platinum resistor temperature sensor. A thermal conductive metal cap is fixedly embedded at the top end of a metal protecting pipe of the high-sensitivity thermal-response platinum resistor temperature sensor, a platinum resistor inductive core is arranged inside a counter bored hole of the thermal conductive metal cap, a signal transmission cable is in electric connection with the platinum resistor inductive core, transmitting signals are guided out of the metal protecting pipe, thermal-insulating layers are arranged on the internal part of the metal protecting pipe of the thermal conducting inductive cap and outside the counter bored hole of the thermal conducting cap, and the thermal conducting connecting body of the counter bored hole of the thermal conducting cap is linked up with thermal conducting metal points which are embedded in the backside of the insulating substrate of the inductive core of the platinum resistor in a thermal-conducting mode. The high-sensitivity thermal-response platinum resistor temperature sensor improves induction sensitivity of the sensor, shortens thermal response time, and enables the platinum inductive core to be capable of sensing temperature change of environment sensitively and outputting transmission signals of detection.
Description
Technical field
What patented claim of the present invention related to is platinum resistance temperature sensor, in particular has the platinum resistance temperature sensor of protection thermal conducting sleeve structure.
Background technology
Platinum resistance temperature sensor is that Current Temperatures measures a most accurate class sensor.As shown in Figure 1, platinum resistance induction core 5 inserts metal protecting tube 1 cecum, embedding thermal conductive insulation glue 4 in pipe to the typical construction of existing platinum resistance temperature sensor temperature-sensing probe, is connected draw the platinum resistance temperature change number of delivering letters by signal transmission cable 8.Its metal protecting tube is the protective housing of platinum resistance induction core, and be also the heat conductor of platinum resistance induction core induced environment temperature, existing material and overall pillar structure cannot be held concurrently and possess desirable protection and excellent heat conductivility simultaneously.There is the technical matters that heat transfer efficiency is low, temperature sense is insensitive, thermal response time is long in existing platinum resistance temperature sensor temperature-sensing probe structure, especially when temperature-sensing probe diameter is more than 10mm specification, above-mentioned technical matters seems more outstanding, the temperature sense time is obviously long, usually more than 25 seconds, for the application scenario that temperature sense sensitivity requirement is more strict, existing platinum resistance temperature sensor product obviously cannot meet user demand.
Summary of the invention
The goal of the invention of the present patent application is the large gauge platinum resistance temperature sensor being less than greatly 10mm for pillar diameter specifications, provides a kind of platinum resistance temperature sensor improving the short highly sensitive thermal response of temperature sense sensitivity and accuracy, thermal response time.The platinum resistance temperature sensor technical scheme of the highly sensitive thermal response that patented claim of the present invention provides, its main technical content is: a kind of platinum resistance temperature sensor of highly sensitive thermal response, setting-in one heat-conducting metal cap is fixed on metal protecting tube top, platinum resistance induction core is placed in heat-conducting metal cap counterbore, respond to core by signal transmission cable and platinum resistance to be electrically connected, the change number of delivering letters is drawn from metal protecting tube, thermofin is provided with outside part and its counterbore in the metal protecting tube of heat-conducting metal cap, thermally conductive interface and the platinum resistance of heat-conducting metal cap counterbore are responded to the heat-conducting metal point heat conduction that the core insulation matrix back side embeds and are connected.Described heat-conducting metal cap is the excellent silvery part of heat conductivility or copper fitting.
In above-mentioned overall technical architecture, described heat-conducting metal cap is copper cap, and copper cap outer face is compounded with silver layer, and silver layer is responded to the heat conduction silver point heat conduction that the core insulation matrix back side embeds be connected by being embedded the silver-colored connector that extends to copper cap counterbore and platinum resistance.
The platinum resistance temperature sensor technical scheme of highly sensitive thermal response disclosed in the present patent application, the heat transfer efficiency that the overall conductive structure of temperature-sensing probe metal protecting tube overcoming existing routine exists is low, thermal response time long, temperature variation responds to insensitive technical matters.Metal protecting tube top embeds the excellent metal material hatting part of heat conduction, ambient temperature is changed direct, the fast platinum resistance that conducts to and responds to core by heat-conducting metal cap, shorten the sensitive time of platinum resistance to variation of ambient temperature, generation fast, the delivery temperature induction change number of delivering letters.The technical program had both remained metal protecting tube protective value, had increased substantially sensor sensing sensitivity simultaneously, had shortened thermal response time, enable platinum resistance respond to the sensitive induced environment temperature variation of core, the output detections change number of delivering letters.For the temperature-sensing probe of diameter 12mm, its thermal response time can shorten to and be no more than 10 seconds, generally reaches 7,8 seconds.The temperature-sensing probe that the application of the technical program is greater than 10mm for diameter specifications is even more ideal, makes thermal response time technical indicator be no longer the restraining factors of platinum resistance temperature sensor major diameter temperature-sensing probe technical development.And in the structural design of the technical program, taken into full account the combination property of product, avoid by the setting of thermofin the disturbing effect that metal protecting tube body conducts non-check point temperature, ensure that the accuracy of temperature sensor temperature detection.
Accompanying drawing explanation
Fig. 1 is the sectional structure chart of existing platinum resistance temperature sensor temperature-sensing probe.
Fig. 2 is an embodiment sectional structure chart of the platinum resistance temperature sensor temperature-sensing probe of this highly sensitive thermal response.
Embodiment
The platinum resistance temperature sensor of the highly sensitive thermal response of patented claim of the present invention, setting-in one heat-conducting metal cap is fixed on metal protecting tube 1 top, this heat-conducting metal cap is the excellent silvery part of heat conductivility or copper fitting, the metal protecting tube inside of heat-conducting metal cap is arranged with the counterbore 20 for inserting platinum resistance induction core 5, and the connector 22 that counterbore 20 hole bottom face extends is connected with heat-conducting metal point 23 heat conduction that the insulating body back side that platinum resistance responds to core 5 embeds.If heat-conducting metal cap silvery part, its heat-conducting effect is best, but cost is excessive, if copper fitting, cost can significantly reduce, heat-conducting effect does not reach the ideal effect of silvery part, the advantage that Fig. 2 example structure combines copper and money kind Heat Conduction Material for this reason designs, this heat-conducting metal cap is copper cap 2, platinum resistance induction core 5 is placed in the counterbore 20 of copper cap 2, signal transmission cable 8 and platinum resistance are responded to core 5 and are electrically connected and draw metal protecting tube 1, thermofin 3 is provided with outside part and its counterbore in the metal protecting tube 1 of leading copper cap 2, thermofin 3 is pasted on metal protecting tube 1 inwall, by in thermal conductive insulation glue 4 embedding metal protecting tube 1, or in the space of embedding thermal conductive insulation glue 4 embedding simultaneously between thermofin 3 and metal protecting tube 1 inwall.Copper cap 2 outer face is compounded with silver layer 21, the insulating body back side of platinum resistance induction core 5 is embedded with heat conduction silver point as heat-conducting metal point 23, and silver layer 21 is responded to the heat conduction silver point heat conduction that the core 5 insulating body back side embeds be connected by being embedded the silvery connector 22 that extends to copper cap counterbore 20 and platinum resistance.This structure one utilizes silver layer 21 high thermal conductivity energy, and two is close copper cap 2 outer face by silver layer, stops copper oxidation, provide the reliability of product.
In this enforcement structure, communicates in the headspace of thermofin 36 with counterbore 20, described headspace 6 to expand with heat and contract with cold the headspace that change provides for buffering, brings negative effect to avoid to greatest extent expanding with heat and contract with cold to this temperature-sensing probe.
Claims (4)
1. the platinum resistance temperature sensor of a highly sensitive thermal response, it is characterized in that setting-in one heat-conducting metal cap is fixed on metal protecting tube (1) top, platinum resistance induction core (5) is placed in heat-conducting metal cap counterbore (20), respond to core (5) by signal transmission cable (8) and platinum resistance to be electrically connected, the change number of delivering letters is drawn from metal protecting tube, heat-conducting metal cap is in metal protecting tube and is provided with thermofin (3) outside part and its counterbore, thermally conductive interface (22) and the platinum resistance of heat-conducting metal cap counterbore are responded to heat-conducting metal point (23) heat conduction that the core insulation matrix back side embeds and are connected.
2. the platinum resistance temperature sensor of highly sensitive thermal response according to claim 1, is characterized in that described heat-conducting metal cap is silvery part or copper fitting.
3. the platinum resistance temperature sensor of highly sensitive thermal response according to claim 1, it is characterized in that described heat-conducting metal cap is copper cap (2), copper cap (2) outer face is compounded with silver layer (21), and silver layer (21) is responded to the heat conduction silver point heat conduction that the core insulation matrix back side embeds be connected by being embedded the silvery thermally conductive interface (22) that extends to copper cap counterbore and platinum resistance.
4. the platinum resistance temperature sensor of the highly sensitive thermal response according to claim 1 or 3, is characterized in that the headspace (6) of thermofin (3) communicates with counterbore (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210552617.5A CN103033280B (en) | 2012-12-18 | 2012-12-18 | High-sensitivity thermal-response platinum resistor temperature sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210552617.5A CN103033280B (en) | 2012-12-18 | 2012-12-18 | High-sensitivity thermal-response platinum resistor temperature sensor |
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| Publication Number | Publication Date |
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| CN103033280A CN103033280A (en) | 2013-04-10 |
| CN103033280B true CN103033280B (en) | 2015-01-14 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103557889A (en) * | 2013-11-14 | 2014-02-05 | 无锡信大气象传感网科技有限公司 | Device for improving response speed of temperature and humidity sensor |
| CN104330163B (en) * | 2014-11-07 | 2018-05-04 | 中国兵器工业集团第二一四研究所苏州研发中心 | Novel steel rail thermo detector |
| CN107014513B (en) * | 2017-04-14 | 2020-03-31 | 东南大学 | Sleeve type platinum resistor temperature sensing device |
| CN106932111A (en) * | 2017-04-28 | 2017-07-07 | 上海岗崎控制仪表有限公司 | A kind of quick conduction heat sensor structures and methods |
| CN108151778B (en) * | 2018-01-11 | 2021-05-11 | 上海智密技术工程研究所有限公司 | Explosion-proof sensor |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1083750A (en) * | 1965-10-01 | 1967-09-20 | Rosemount Eng Co Ltd | Improvements in or relating to temperature sensors |
| CN2108912U (en) * | 1991-10-12 | 1992-07-01 | 高云金 | Platinum thermo-resistance |
| JP3027938B2 (en) * | 1996-04-19 | 2000-04-04 | 松下電器産業株式会社 | Temperature detector |
| CN201622136U (en) * | 2010-01-30 | 2010-11-03 | 杨晶 | High-performance platinum thermal resistance temperature sensor |
| CN102062643A (en) * | 2009-11-16 | 2011-05-18 | 上海岗崎控制仪表有限公司 | Wear-resistant quick temperature measuring platinum resistance thermometer |
| CN101487804B (en) * | 2008-12-26 | 2012-01-11 | 中国人民解放军第五七一九工厂 | Lubricating grease dropping point temperature measuring sensor |
| CN202974489U (en) * | 2012-12-18 | 2013-06-05 | 杨晶 | High-sensitivity thermal-response platinum resistor temperature sensor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2572893B2 (en) * | 1991-02-14 | 1997-01-16 | 株式会社岡崎製作所 | High-speed response type temperature sensor |
-
2012
- 2012-12-18 CN CN201210552617.5A patent/CN103033280B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1083750A (en) * | 1965-10-01 | 1967-09-20 | Rosemount Eng Co Ltd | Improvements in or relating to temperature sensors |
| CN2108912U (en) * | 1991-10-12 | 1992-07-01 | 高云金 | Platinum thermo-resistance |
| JP3027938B2 (en) * | 1996-04-19 | 2000-04-04 | 松下電器産業株式会社 | Temperature detector |
| CN101487804B (en) * | 2008-12-26 | 2012-01-11 | 中国人民解放军第五七一九工厂 | Lubricating grease dropping point temperature measuring sensor |
| CN102062643A (en) * | 2009-11-16 | 2011-05-18 | 上海岗崎控制仪表有限公司 | Wear-resistant quick temperature measuring platinum resistance thermometer |
| CN201622136U (en) * | 2010-01-30 | 2010-11-03 | 杨晶 | High-performance platinum thermal resistance temperature sensor |
| CN202974489U (en) * | 2012-12-18 | 2013-06-05 | 杨晶 | High-sensitivity thermal-response platinum resistor temperature sensor |
Non-Patent Citations (1)
| Title |
|---|
| JP特开平4-259833A 1992.09.16 * |
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Owner name: DANDONG YALUJIANG SENSITIVE ELEMENT CO., LTD. Free format text: FORMER OWNER: YANG JING Effective date: 20150610 |
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Effective date of registration: 20150610 Address after: 118000 No. 6 Factory Road, Zhenxing District, Liaoning, Dandong Patentee after: DANDONG YALUJIANG SENSITIVE CO., LTD. Address before: 118000 No. 6 Factory Road, Zhenxing District, Liaoning, Dandong Patentee before: Yang Jing |