CN100470218C - Contact temperature sensor for medium and high voltage switchgear - Google Patents
Contact temperature sensor for medium and high voltage switchgear Download PDFInfo
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- CN100470218C CN100470218C CNB2006100507933A CN200610050793A CN100470218C CN 100470218 C CN100470218 C CN 100470218C CN B2006100507933 A CNB2006100507933 A CN B2006100507933A CN 200610050793 A CN200610050793 A CN 200610050793A CN 100470218 C CN100470218 C CN 100470218C
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- high voltage
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- epoxy resin
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- temperature sensor
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- 239000000523 sample Substances 0.000 claims abstract description 26
- 238000012546 transfer Methods 0.000 claims abstract description 15
- 239000003822 epoxy resin Substances 0.000 claims abstract description 13
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 13
- 238000009413 insulation Methods 0.000 claims abstract description 6
- 239000002086 nanomaterial Substances 0.000 claims abstract description 5
- 239000000919 ceramic Substances 0.000 claims description 2
- 229910017083 AlN Inorganic materials 0.000 claims 1
- PIGFYZPCRLYGLF-UHFFFAOYSA-N Aluminum nitride Chemical compound [Al]#N PIGFYZPCRLYGLF-UHFFFAOYSA-N 0.000 claims 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 abstract description 10
- 239000002184 metal Substances 0.000 abstract description 10
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 abstract description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 4
- 238000010292 electrical insulation Methods 0.000 abstract description 4
- 238000005259 measurement Methods 0.000 abstract description 3
- 238000009529 body temperature measurement Methods 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract description 2
- 229910052742 iron Inorganic materials 0.000 abstract description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
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Abstract
本发明公开了一种中高压开关柜接触式温度传感器。在绝缘传热基座上表面装有热敏电阻探头，热敏电阻探头四周包裹环氧树脂并与绝缘传热基座固结在一起，环氧树脂外罩有金属屏蔽外壳，热敏电阻探头的引出线穿过金属屏蔽外壳小孔，在绝缘传热基座上设有安装孔。把Pt电阻用环氧树脂包裹封装起来，使得Pt电阻对温度的感应更加全面均匀。选用纳米材料ALN(氮化铝)作为基座，由于其优良的热传导性和可靠的电绝缘性，既很好的解决了高压绝缘问题，又不影响温度的测量。探头由铁外壳笼罩，可以很好的屏蔽中高压开关柜中严重的电磁干扰，保证测量的可靠性和精确性，本发明可应用于工作电压为10kv～35kv的中高压电力开关柜。
The invention discloses a contact type temperature sensor for a medium and high voltage switch cabinet. A thermistor probe is installed on the upper surface of the insulating heat transfer base. The thermistor probe is wrapped with epoxy resin and solidified with the insulating heat transfer base. The epoxy resin is covered with a metal shielding shell. Lead wires pass through small holes in the metal shielding shell, and installation holes are provided on the insulating heat transfer base. The Pt resistor is wrapped and packaged with epoxy resin, so that the temperature sensing of the Pt resistor is more comprehensive and uniform. The nanomaterial ALN (aluminum nitride) is selected as the base, because of its excellent thermal conductivity and reliable electrical insulation, it not only solves the problem of high voltage insulation, but also does not affect the temperature measurement. The probe is covered by an iron shell, which can well shield the serious electromagnetic interference in the medium and high voltage switchgear and ensure the reliability and accuracy of the measurement. The invention can be applied to the medium and high voltage power switchgear with the working voltage of 10kv-35kv.
Description
技术领域 technical field
本发明涉及温度传感器，尤其涉及一种中高压开关柜接触式温度传感器。The invention relates to a temperature sensor, in particular to a contact temperature sensor for a medium and high voltage switch cabinet.
背景技术 Background technique
电力系统的安全运行十分重要，随着现代电力向高电压、大机组、大容量的迅速发展，对电力系统供电可靠性的要求越来越高。影响电力系统安全性的因素很多，其中一个重要方面是电气设备自身的安全运行问题。由于绝大多数的电气设备采用封闭式结构，散热效果差，热积累大，并长期处于高电压、大电流的工作状态，其结果造成热量集结加剧，温升直接威胁电气设备的电气绝缘。对全封闭高压开关电器，其开关触头温度的监测问题就日益突出。The safe operation of the power system is very important. With the rapid development of modern power to high voltage, large units, and large capacity, the requirements for power supply reliability of the power system are getting higher and higher. There are many factors affecting the safety of power systems, one of which is the safe operation of electrical equipment itself. Since the vast majority of electrical equipment adopts a closed structure, the heat dissipation effect is poor, the heat accumulation is large, and it is in the working state of high voltage and high current for a long time. As a result, the heat accumulation is intensified, and the temperature rise directly threatens the electrical insulation of the electrical equipment. For fully enclosed high-voltage switching appliances, the problem of monitoring the temperature of the switch contacts has become increasingly prominent.
发明内容 Contents of the invention
本发明的目的在于提供结构较简单，测量精度较高的一种中高压开关柜接触式温度传感器。The purpose of the present invention is to provide a contact temperature sensor for medium and high voltage switchgear with relatively simple structure and high measurement accuracy.
本发明解决其技术问题所采用的技术方案是：在绝缘传热基座上表面装有热敏电阻探头，热敏电阻探头四周包裹环氧树脂并与绝缘传热基座固结在一起，环氧树脂外罩有金属屏蔽外壳，热敏电阻探头的引出线穿过金属屏蔽外壳小孔，在绝缘传热基座上设有安装孔。The technical solution adopted by the present invention to solve the technical problem is: a thermistor probe is installed on the upper surface of the insulating heat transfer base, and the thermistor probe is wrapped with epoxy resin and solidified with the insulating heat transfer base. The epoxy resin outer cover is provided with a metal shielding shell, the lead wire of the thermistor probe passes through the small hole of the metal shielding shell, and an installation hole is arranged on the insulating heat transfer base.
本发明具有的有益效果是：把热敏电阻探头用环氧树脂包裹封装起来，使得热敏电阻探头对温度的感应更加全面均匀。选用新型纳米材料ALN(氮化铝)作为基座，由于其优良的热传导性和可靠的电绝缘性，既很好的解决了高压绝缘问题，又不影响温度的测量。探头由铁外壳笼罩，可以很好的屏蔽中高压开关柜中严重的电磁干扰，保证测量的可靠性和精确性，本发明可应用于工作电压为10kv～35kv的中高压电力开关柜。。The beneficial effect of the invention is that the thermistor probe is wrapped and packaged with epoxy resin, so that the temperature sensing of the thermistor probe is more comprehensive and uniform. The new nano material ALN (aluminum nitride) is selected as the base, because of its excellent thermal conductivity and reliable electrical insulation, it not only solves the problem of high voltage insulation, but also does not affect the temperature measurement. The probe is covered by an iron shell, which can well shield the serious electromagnetic interference in the medium and high voltage switchgear and ensure the reliability and accuracy of the measurement. The invention can be applied to the medium and high voltage power switchgear with the working voltage of 10kv-35kv. .
附图说明 Description of drawings
附图1是本发明的结构示意图。Accompanying
附图2是附图1的俯视图。Accompanying
图中：1、绝缘传热基座，2、安装孔，3、热敏电阻探头，4、环氧树脂，5、金属屏蔽外壳。In the figure: 1. Insulated heat transfer base, 2. Mounting hole, 3. Thermistor probe, 4. Epoxy resin, 5. Metal shielding shell.
具体实施方式 Detailed ways
如附图1、附图2所示，在绝缘传热基座1上表面装有热敏电阻探头3，热敏电阻探头3四周包裹环氧树脂4并与绝缘传热基座1固结在一起，环氧树脂4外罩有金属屏蔽外壳5，热敏电阻探头3的引出线穿过金属屏蔽外壳5小孔，在绝缘传热基座1上设有安装孔2。As shown in accompanying
所述的绝缘传热基座1为纳米材料氮化铝陶瓷基座。The insulating
所述的热敏电阻探头3为Pt热敏电阻探头。The
本发明包括探头部分、探头盒部分。探头采用环氧树脂包裹Pt电阻的形式，把环氧树脂加热至熔化状态，四周环绕浇注于Pt电阻上，待常温后固结，形成一体式的探头。探头盒主要由基座1和金属屏蔽外壳5组成。基座采用纳米材料ALN(氮化铝)，该材料采用纳米技术加工制造，无毒性，具有优良的热传导性、可靠的电绝缘性、低的介电常数和介电损耗、高的强度并便于加工制造，材料热导率受温度影响小等优点。热敏电阻采用贴片式Pt电阻，该热电阻具有体积小，热惯性小，温度响应快，长期稳定性很好，宽温度范围内精度高的特点。金属屏蔽外壳5采用铁磁性材料，屏蔽中高压开关柜内部严重的电磁干扰。探头的引出线穿过金属屏蔽壳顶部的小孔，接到信号处理电路，进行温度采集。The invention includes a probe part and a probe box part. The probe adopts the form of epoxy resin wrapped Pt resistor, the epoxy resin is heated to a molten state, surrounded by pouring on the Pt resistor, and solidified at room temperature to form an integrated probe. The probe box is mainly composed of a
上述具体实施方式用来解释说明本发明，而不是对本发明进行限制，在本发明的精神和权利要求的保护范围内，对本发明作出的任何修改和改变，都落入本发明的保护范围。The above specific embodiments are used to explain the present invention, rather than to limit the present invention. Within the spirit of the present invention and the protection scope of the claims, any modification and change made to the present invention will fall into the protection scope of the present invention.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100507933A CN100470218C (en) | 2006-05-17 | 2006-05-17 | Contact temperature sensor for medium and high voltage switchgear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100507933A CN100470218C (en) | 2006-05-17 | 2006-05-17 | Contact temperature sensor for medium and high voltage switchgear |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1877272A CN1877272A (en) | 2006-12-13 |
| CN100470218C true CN100470218C (en) | 2009-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100507933A Expired - Fee Related CN100470218C (en) | 2006-05-17 | 2006-05-17 | Contact temperature sensor for medium and high voltage switchgear |
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| CN (1) | CN100470218C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101464192B (en) * | 2008-02-02 | 2011-01-12 | 杨志强 | Temperature measuring ring for switch cabinet contact |
| JP2010051141A (en) * | 2008-08-25 | 2010-03-04 | Panasonic Corp | Electric motor with position detector |
| WO2011005254A1 (en) | 2009-07-08 | 2011-01-13 | Abb Research Ltd | Bus condition monitoring system |
| CN101894904B (en) * | 2010-07-15 | 2011-12-28 | 电子科技大学 | Metal-base film thermocouple and preparation method thereof |
| CN102522270A (en) * | 2011-12-16 | 2012-06-27 | 张健 | Power supply switching device with heat protection device of main contact terminal circuit |
| CN103277651B (en) * | 2013-06-13 | 2016-04-06 | 新乡学院 | A kind of base of ceramic for high-temperature thermal detection |
| CN103411726B (en) * | 2013-07-26 | 2015-10-07 | 上海俊乐制冷自控元件有限公司 | A kind of pressure unit |
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2006
- 2006-05-17 CN CNB2006100507933A patent/CN100470218C/en not_active Expired - Fee Related
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| CN1877272A (en) | 2006-12-13 |
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Granted publication date: 20090318 Termination date: 20120517 |