CN86104974A - 用于测量真空炉内温度的热电元件 - Google Patents

用于测量真空炉内温度的热电元件 Download PDF

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Publication number
CN86104974A
CN86104974A CN86104974.8A CN86104974A CN86104974A CN 86104974 A CN86104974 A CN 86104974A CN 86104974 A CN86104974 A CN 86104974A CN 86104974 A CN86104974 A CN 86104974A
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China
Prior art keywords
protecting tube
thermoelectric element
temperature
vacuum drying
drying oven
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CN86104974.8A
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English (en)
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CN1003469B (zh
Inventor
维利·弗里普昂
保罗·海尔曼
思奥·万·海斯特
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Evonik Operations GmbH
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Degussa GmbH
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Application filed by Degussa GmbH filed Critical Degussa GmbH
Publication of CN86104974A publication Critical patent/CN86104974A/zh
Publication of CN1003469B publication Critical patent/CN1003469B/zh
Expired legal-status Critical Current

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
    • G01K1/16—Special arrangements for conducting heat from the object to the sensitive element
    • G01K1/18—Special arrangements for conducting heat from the object to the sensitive element for reducing thermal inertia
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
    • G01K1/08—Protective devices, e.g. casings

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Temperature Or Quantity Of Heat (AREA)
  • Cookers (AREA)
  • Drying Of Solid Materials (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)

Abstract

一种能更快地检测温度并能抵抗真空炉内的干扰信号的热电元件，其防护管由石英玻璃组成，防护管上螺旋地缠绕一根接地的金属导线。

Description

本发明涉及到一个用于测量真空炉内300～1300℃范围内的温度的、由一个热电偶和一个防护管组成的一种热电元件。
真空炉内的温度通常由热电元件来监控，这些热电元件是由一个热电偶（一般是铂/铂铑）和一个防护管组成。防护管由陶瓷材料，特别是铝氧化物制作。由于测量或控制真空炉内温度要取决于防护管的壁厚和温度范围，防护管延迟了在热电偶上的温度测定。这种在温度示数上的延迟会出现相当大的误差数值，特别是在300～600℃的温度范围内。此外，人们已发现干扰电压很容易地传给带有非金属的防护管的热电元件，使得整个测量系统失效。
因此，本发明的目的是改进用于测量真空炉内300～1300℃范围内的温度的、由一个热电偶和一个防护管组成的一种热电元件，这种改进的热电元件可用于非常快速的温度检测，甚至在较低的炉温下也是如此。此外它能受到保护以抗干扰电压。
根据本发明，防护管由石英玻璃组成，将接地金属导线螺旋地缠绕在防护管上，即可达到上述目的。
最好是在防护管上的每厘米长度上缠绕1～5圈导线，该导线是与防护管直接接触的。
因为石英玻璃可透过光和红外线辐射，在低温情况下，较弱的热辐射同样能快速地传给热电偶，从而与采用一般陶瓷防护管的热电元件相比，能更快地检测到真空炉中的温度，并且测量更加准确。
螺旋地缠绕在防护管上的接地金属导线保护热电元件以抵抗炉内的电干扰，而不影响防护管对辐射的可透性。镍-铬，钼和铂是制作导线的良好材料，选材取决于要检测的温度。
根据本发明的热电元件的一个实施方式可借助于下列具有参考附图的实例来进行描述。
热电偶由一个由石英玻璃组成的防护管组成，这个防护管给热电偶（3）提供一个传导介质。金属导线（4）被螺旋地缠绕在防护管（1）上，而防护管被固定在一个保持架（5）内，金属导线（4）接地（6）。

Claims (2)

1、用于测量真空炉内300～1300℃范围内的温度的、由一个热电偶和一个防护管组成的热电元件，其特征在于防护管由石英玻璃组成，而一根接地金属导线被螺旋地缠绕在防护管上。
2、根据权利要求1的热电元件，其特征在于在防护管上，每厘米长度上绕有1～5圈导线。
CN86104974.8A 1985-08-06 1986-08-05 用于测量真空炉内温度的热电元件 Expired CN1003469B (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP3528161.8 1985-08-06
DE3528161A DE3528161C1 (de) 1985-08-06 1985-08-06 Thermoelement zur Messung von Temperaturen in Vakuumoefen

Publications (2)

Publication Number Publication Date
CN86104974A true CN86104974A (zh) 1987-02-04
CN1003469B CN1003469B (zh) 1989-03-01

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Family Applications (1)

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CN86104974.8A Expired CN1003469B (zh) 1985-08-06 1986-08-05 用于测量真空炉内温度的热电元件

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US (1) US4717787A (zh)
EP (1) EP0212170A3 (zh)
JP (1) JPS6234022A (zh)
CN (1) CN1003469B (zh)
BR (1) BR8603706A (zh)
DD (1) DD259249A5 (zh)
DE (1) DE3528161C1 (zh)
ES (1) ES2001180A6 (zh)
IN (1) IN164090B (zh)
NO (1) NO862937L (zh)
PT (1) PT83133A (zh)
ZA (1) ZA865136B (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101576417B (zh) * 2008-05-09 2012-06-27 河南大学 一种热电偶用保护管及其制备方法

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4138460C2 (de) * 1991-11-22 1994-02-10 Siemens Ag Innerhalb eines Schutzrohres angeordnetes Thermoelement
DE10015481C1 (de) 2000-03-29 2001-09-27 Heraeus Electro Nite Int Sensor mit einem temperaturabhängigen Messelement
DE102004013154A1 (de) * 2004-03-17 2005-10-06 BSH Bosch und Siemens Hausgeräte GmbH Schutzrohr für Messfühler, insbesondere Temperaturreaktionselemente
US8459865B1 (en) * 2010-11-30 2013-06-11 Sandia Corporation Tracking heat flux sensors for concentrating solar applications
DE102012201501B4 (de) 2012-02-02 2015-11-12 Ignatios Giannelis Vorrichtung zur Bestimmung der Temperatur einer Schmelze
JP6297765B1 (ja) * 2017-03-16 2018-03-20 株式会社芝浦電子 温度センサ
DE102018222111A1 (de) * 2018-12-18 2020-06-18 Schott Ag Ofen, insbesondere Kühlofen

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US813682A (en) * 1905-08-14 1906-02-27 Meyer Wilderman Thermopile.
US2672492A (en) * 1950-03-09 1954-03-16 Sukacev Lev Thermopiles
US3199352A (en) * 1962-06-25 1965-08-10 Macatician John Heat transfer gauge
BE835664A (nl) * 1975-11-18 1976-03-16 Verbeterde thermokoppel en inrichtingen uitgerust met dergelijke thermokoppels
GB1585077A (en) * 1976-07-23 1981-02-25 Thermal Syndicate Ltd Thermocouple element

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101576417B (zh) * 2008-05-09 2012-06-27 河南大学 一种热电偶用保护管及其制备方法

Also Published As

Publication number Publication date
DE3528161C1 (de) 1986-10-23
ES2001180A6 (es) 1988-05-01
NO862937L (no) 1987-02-09
ZA865136B (en) 1987-03-25
CN1003469B (zh) 1989-03-01
EP0212170A2 (de) 1987-03-04
DD259249A5 (de) 1988-08-17
EP0212170A3 (de) 1988-10-05
US4717787A (en) 1988-01-05
JPS6234022A (ja) 1987-02-14
IN164090B (zh) 1989-01-14
PT83133A (pt) 1987-02-27
NO862937D0 (no) 1986-07-21
BR8603706A (pt) 1987-03-10

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