DE215849C - - Google Patents
Info
- Publication number
- DE215849C DE215849C DENDAT215849D DE215849DA DE215849C DE 215849 C DE215849 C DE 215849C DE NDAT215849 D DENDAT215849 D DE NDAT215849D DE 215849D A DE215849D A DE 215849DA DE 215849 C DE215849 C DE 215849C
- Authority
- DE
- Germany
- Prior art keywords
- firedamp
- heat
- poles
- battery
- thermal
- 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.)
- Active
Links
- 239000000126 substance Substances 0.000 claims description 8
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 6
- 230000003197 catalytic Effects 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 238000009529 body temperature measurement Methods 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 230000001681 protective Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/14—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of an electrically-heated body in dependence upon change of temperature
- G01N27/16—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of an electrically-heated body in dependence upon change of temperature caused by burning or catalytic oxidation of surrounding material to be tested, e.g. of gas
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Description
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KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
Λ 21Λ 21
KLASSEGREAT
■^ Schlagwetteranzeiger.■ ^ Firedamp indicator.
Die bisher bekannt gewordenen Konstruktionen von Apparaten, welche unter Benutzung der Wärmeentwicklung einer katalytisch wirksamen Substanz bei Gegenwart von Schlagwettern zum Anzeigen der letzteren dienen sollen, geben alle mehr oder weniger fehlerhafte Resultate, weil man entweder die durch katalytische Wirkung erzeugte Wärme kombinierte mit der von einer anderen Wärme- quelle, wie z. B. der von einem durch Strom erhitzten Leiter herrührenden, und die Wärmeübertragung auf den meist als elektrisches Thermometer ausgebildeten Signal- oder Anzeigeapparat durch Strahlung bewirkte, oder weil man die katalytische Substanz direkt mit den Polin einer zur Temperaturmessung bestimmten Thermobatterie in Berührung brachte, so daß ein Nebenschluß oder Kurzschluß zwischen den Elementpolen unvermeidlich war.The previously known constructions of apparatus which are using the heat generation of a catalytically active substance in the presence of firedamp to serve to indicate the latter, all give more or less faulty Results because either the heat generated by the catalytic action was combined with that of another heat source source, such as B. that resulting from a conductor heated by current, and the heat transfer on the signal or display device, which is usually designed as an electrical thermometer caused by radiation, or because one determined the catalytic substance directly with the Polin one for temperature measurement Thermal battery brought into contact so that a shunt or short circuit between was inevitable in the elemental poles.
Der in folgendem beschriebene Schlagwetteranzeiger ist demgegenüber so konstruiert, daß diese Fehlerquellen sämtlich vermieden werden, und zwar insbesondere dadurch; daß die Wärmeübertragung von der katalytisch wirksamen Substanz auf das elektrische Thermometer weder durch Strahlung noch durch direkte Berührung, sondern ' durch Leitung erfolgt. Fig. ι und 2 zeigen Ausführungsbeispiele eines derartigen Schlagwetteranzeigers, bei welchem entweder ein thermoelektrischer Temperaturzeiger oder ein elektrisches Widerstandsthermometer zum Messen der durch katalytische Wirkung erzeugten Wärme bzw. des von dieser abhängigen Wettergehaltes einer Grube Verwendung findet.In contrast, the firedamp indicator described in the following is designed in such a way that these sources of error are all avoided, in particular by doing so; that the Heat transfer from the catalytically active substance to the electrical thermometer neither by radiation nor by direct contact, but rather by conduction. Fig. Ι and 2 show embodiments of such a firedamp indicator, in which either a thermoelectric temperature pointer or an electrical resistance thermometer to measure the heat generated by the catalytic effect or the weather content of a mine depending on this finds.
In Fig. ι werden die einseitigen Lötstellen einer Thermobatterie b innerhalb eines Schutzgehäuses, das aus Drahtnetz hergestellt sein kann, durch einen Träger t aus isolierendem Material gehalten, und jede dieser Lötstellen ist mit einem mehrfach gebogenen Blechstreifen α aus gut leitendem Material, z. B. Silber, fest verbunden. Alle Blechstreifen sind durch eine Stütze s, ebenfalls aus Isoliermaterial, gehalten und mit der katalytisch wirksamen Substanz bedeckt, so daß sie eine Ternperaturerhöhung dieser letzteren durch Leitung auf die Thermobatterie b übertragen und' durch gute Wärmeableitung gleichzeitig einer zu starken Erhitzung der katalytischen Substanz* vorbeugen. Die Endklemmen ^1 und A2 der Thermobatterie werden dann in bekannter Weise mit einem geeigneten Temperaturanzeige- oder Registrierapparat verbunden.In Fig. Ι the one-sided soldering points of a thermal battery b are held within a protective housing, which can be made of wire mesh, by a carrier t made of insulating material, and each of these soldering points is with a multi-bent sheet metal strip α made of highly conductive material, for. B. silver, firmly connected. All sheet metal strips are held by a support s, also made of insulating material, and covered with the catalytically active substance, so that they transfer an increase in temperature of the latter to the thermal battery b by conduction and at the same time prevent excessive heating of the catalytic substance * through good heat dissipation . The end clamps ^ 1 and A 2 of the thermal battery are then connected in a known manner to a suitable temperature display or recording device.
Fig. 2 zeigt eine ähnliche Einrichtung, bei welcher jedoch an Stelle der' Thermobatterie ein elektrisches Widerstandsthermometer getreten ist. Dieses besteht aus einem spiralförmig aufgewundenen Draht w, der an der Innenwand eines sehr dünnwandigen isolierenden Rohres g, z. B. aus Glimmer, anliegt, welches außen einen Metallüberzug erhalten hat, auf welchem die katalytisch wirksame Substanz verteilt ist. Die Enden des Widerstandsthermometers sind an die Klemmen A1 A2 geführt, an welche die Leitungen zu einem direkt zeigendenFig. 2 shows a similar device, in which, however, an electrical resistance thermometer has been used in place of the thermal battery. This consists of a spirally wound wire w, which is attached to the inner wall of a very thin-walled insulating tube g, for. B. made of mica, which has received a metal coating on the outside, on which the catalytically active substance is distributed. The ends of the resistance thermometer are led to the terminals A 1 A 2 , to which the lines to a directly pointing
Claims (1)
Publications (1)
Publication Number | Publication Date |
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DE215849C true DE215849C (en) |
Family
ID=477308
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DENDAT215849D Active DE215849C (en) |
Country Status (1)
Country | Link |
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DE (1) | DE215849C (en) |
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- DE DENDAT215849D patent/DE215849C/de active Active
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