DE402449C - Device for measuring the temperature of furnace gases by radiation pyrometer using test pieces - Google Patents

Device for measuring the temperature of furnace gases by radiation pyrometer using test pieces

Info

Publication number
DE402449C
DE402449C DES63494D DES0063494D DE402449C DE 402449 C DE402449 C DE 402449C DE S63494 D DES63494 D DE S63494D DE S0063494 D DES0063494 D DE S0063494D DE 402449 C DE402449 C DE 402449C
Authority
DE
Germany
Prior art keywords
temperature
measuring
test piece
furnace
furnace gases
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
Application number
DES63494D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens and Halske AG
Siemens AG
Original Assignee
Siemens and Halske AG
Siemens AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens and Halske AG, Siemens AG filed Critical Siemens and Halske AG
Priority to DES63494D priority Critical patent/DE402449C/en
Application granted granted Critical
Publication of DE402449C publication Critical patent/DE402449C/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/02—Constructional details
    • G01J5/08—Optical arrangements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/0014—Radiation pyrometry, e.g. infrared or optical thermometry for sensing the radiation from gases, flames
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/0044—Furnaces, ovens, kilns
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/02—Constructional details
    • G01J5/04—Casings
    • G01J5/041—Mountings in enclosures or in a particular environment
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/02—Constructional details
    • G01J5/04—Casings
    • G01J5/046—Materials; Selection of thermal materials
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/02—Constructional details
    • G01J5/08—Optical arrangements
    • G01J5/0818—Waveguides
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/02—Constructional details
    • G01J5/08—Optical arrangements
    • G01J5/0887—Integrating cavities mimicking black bodies, wherein the heat propagation between the black body and the measuring element does not occur within a solid; Use of bodies placed inside the fluid stream for measurement of the temperature of gases; Use of the reemission from a surface, e.g. reflective surface; Emissivity enhancement by multiple reflections

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Radiation Pyrometers (AREA)

Description

Vorrichtung zur blessung der Temperatur von Ofengasen durch Strahlungspyrometer mittels Prüfstücks. In dem Hauptpatent 398174 ist eine Vorrichtung zur Mepsung der Temperatur voA Ofengasen mittels eines dein Gasstrom ausgesetzten Prüfstücl#es angegeben,. bei der die zu messenden Gase durch eine Saugvorrichtung in scharfem Strome an dem Prüfstück vorbeigeführt werden. In dem dargestellten Ausführungsbeispiel ist das Prüfstück fin Innem des Ofens derart angeordnet, daß es von allen Seiten von den zu messenden Gasen un-ispült wird. Indessen bietet der Einbau eines Prüfstückes in den Ofen n=cl*nM erhebliche Schwierigkeiten.Device for measuring the temperature of furnace gases by means of a radiation pyrometer by means of a test piece. In the main patent 398174 is a device for Mepsung the Temperature of furnace gases by means of a test piece exposed to the gas flow. in which the gases to be measured are fed through a suction device in a sharp stream Test piece are passed. In the illustrated embodiment, this is Test piece fin inside the furnace arranged in such a way that it is from all sides from the gases to be measured is un-purged. However, the installation of a test piece offers in the furnace n = cl * nM considerable difficulties.

Eine Verhesserung der Vorrichtung, dig eine allgemeine Verwendung gestattet, wird : erfindungsgemäß dadurch erzielt, daß das Prüfstück-, an dem die Gase in scharfem Strome vorbeigeführt werden, Dicht innerhalb des Ofens, sondern aüBerhalb in einem seitlich an diesem angesetzten Rohr angeordnet ist.A Verhesserung of the device dig general use permits, is: according to the invention achieved in that the Prüfstück- at which the gases are passed in sharp current, is arranged sealing within the furnace, but aüBerhalb in a laterally attached to this tube.

Die Abb. i zeigt schematisch diese Anordnung. i ist das Ofeninnere, 2 die Ofenwaiidung, in die ein Rohr aus feuerfestem Material 3 eingebaut ist. Das vom Ofen abgewandte Ende des Rohres 3 ist an eine Saugvorrichtung angeschlossen. Das Rohr 3 besitzt bei 4 eine Erweiterung, in deren Mitte sich das Prüfstück 5 befindet. Durch einen seitlichen Ansatz 6 an dieser Erweiterung, der mittels einer durchsichtigen -Scheibe 7-geschlossen ist, wird die Temperatur des Stückes 5 mit Hilfe eines nicht daj#gestellten optischen Pyrometers oder eines thermo-elektrischen Pyrometers gemessen.Fig. I shows this arrangement schematically. i is the interior of the furnace, 2 is the furnace lining, in which a tube made of refractory material 3 is installed. The end of the tube 3 facing away from the furnace is connected to a suction device. The tube 3 has an extension at 4, in the middle of which the test piece 5 is located. The temperature of the piece 5 is measured by means of an optical pyrometer or a thermo-electric pyrometer which is not provided through a lateral attachment 6 on this extension, which is closed by means of a transparent disk 7.

Die geschilderte Vorrichtung kann noch dadurch vereinfacht werden" daß als Prüfstück nicht ein im Innern des gasdurchströmten Raumes isoliert angeordnetes Stück verwendet wird, sondern die Walidung des gasdurchströmten Rohres selbst. Diese Vorrichtung ist in Abb. 2 schematisch dargestellt. Da nun die Wandung dies Rohres unter normalen Umständen einen erheblichen Wärmeverlust durch Ausstrahlung und Ab- leitung nach außen erfahren würde und so die Wirkung der andauernden Zufuhr frischen Gases zu der Beobachtungsstelle leicht zum Teil kompensiert werden «könnte, ist es erforderlich, in solchem Falle das Rohr 3, besonders an der zu beobachtenden Stelle, mit einer möglichst guten Wärmeisolation zu umkleiden - etwa dicken Asbestschichten - wie sie bei 8 angedeutet sind.The device described can be further simplified by not using a piece insulated inside the gas-flowed space as the test piece, but rather the wall of the gas-flowed pipe itself. This device is shown schematically in Fig would normal circumstances lead a significant loss of heat by radiation and waste out to the outside and the effect of the continuing supply of fresh gas to compensate for the Observatory easy part 'might, it is necessary in such a case the tube 3, especially on the to observing place, with the best possible thermal insulation - such as thick layers of asbestos - as indicated at 8.

Es ist weiter zweckmäßig, darauf Bedacht zu nehmen, daß die Strahlung der betreflenden Wandungsstelle der eines schwarzen Körpers möglichst angenähert wird, zumar wenn mehr oder weniger durchsichtiges Material zur Herstellung des Rohres verwendet wird. Es empfiehlt sich in den meisten Fällen, sofern die zu messende Temperatur nichtbesonders hochliegt, eine Bekleidungmit Nickelblech, wie bei 9 angedeutet. Die Oberfläche dieses wird durch viele der in Betracht kommenden Gase sofort in Nickeloxyd verwandelt, das einen verhältnismäßig vollkommenen schwarzen Körper darstellt.It is also advisable to ensure that the radiation from the wall in question is as close as possible to that of a black body, especially if more or less transparent material is used to manufacture the pipe. It is recommended in most cases, provided the temperature to be measured is not particularly high, cladding with nickel sheet, as indicated at 9. The surface of this is instantly transformed by many of the gases in question into nickel oxide, which is a relatively perfect black body.

Claims (2)

PATENT-ANSPRÜCHE: i. Vorrichtung zur Messung der Tempera ' tur von Ofengasen durch Strahlungspyrometer mittels Prüfstücks nach Patent 398174, dadurch gekennzeichnet, daß das zweckmäßig als schwarzer Körper ausgebildete Prüfstück innerhalb eines seitlich an den Ofen angesetzten Saugrohres angeordnet ist. PATENT CLAIMS: i. Device for measuring the temperature 'ture of furnace gases by means of radiation pyrometers test piece according to patent 398174, characterized in that the appropriate as a black body formed test piece is arranged inside a laterally attached to the furnace intake manifold. 2. Vorrichtung nach Anspruch i, dadurch gekennzeichnet, daß eine Stelle der zweckmäßig hochwärmeisolierten Wandung des Saugrühres als Prüfstück dient. 2. Apparatus according to claim i, characterized in that one point of the suitably highly heat-insulated wall of the suction stirrer serves as a test piece.
DES63494D 1923-08-04 1923-08-04 Device for measuring the temperature of furnace gases by radiation pyrometer using test pieces Expired DE402449C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES63494D DE402449C (en) 1923-08-04 1923-08-04 Device for measuring the temperature of furnace gases by radiation pyrometer using test pieces

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES63494D DE402449C (en) 1923-08-04 1923-08-04 Device for measuring the temperature of furnace gases by radiation pyrometer using test pieces

Publications (1)

Publication Number Publication Date
DE402449C true DE402449C (en) 1924-09-18

Family

ID=7496428

Family Applications (1)

Application Number Title Priority Date Filing Date
DES63494D Expired DE402449C (en) 1923-08-04 1923-08-04 Device for measuring the temperature of furnace gases by radiation pyrometer using test pieces

Country Status (1)

Country Link
DE (1) DE402449C (en)

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