DE1221815B - Device for displaying a lower oxygen concentration in mine weather - Google Patents
Device for displaying a lower oxygen concentration in mine weatherInfo
- Publication number
- DE1221815B DE1221815B DEC34044A DEC0034044A DE1221815B DE 1221815 B DE1221815 B DE 1221815B DE C34044 A DEC34044 A DE C34044A DE C0034044 A DEC0034044 A DE C0034044A DE 1221815 B DE1221815 B DE 1221815B
- Authority
- DE
- Germany
- Prior art keywords
- flame
- displaying
- oxygen concentration
- lower oxygen
- acoustic signal
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
- G01N25/22—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity on combustion or catalytic oxidation, e.g. of components of gas mixtures
- G01N25/28—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity on combustion or catalytic oxidation, e.g. of components of gas mixtures the rise in temperature of the gases resulting from combustion being measured directly
- G01N25/30—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity on combustion or catalytic oxidation, e.g. of components of gas mixtures the rise in temperature of the gases resulting from combustion being measured directly using electric temperature-responsive elements
- G01N25/32—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity on combustion or catalytic oxidation, e.g. of components of gas mixtures the rise in temperature of the gases resulting from combustion being measured directly using electric temperature-responsive elements using thermoelectric elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21L—LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
- F21L14/00—Electric lighting devices without a self-contained power source, e.g. for mains connection
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V33/00—Structural combinations of lighting devices with other articles, not otherwise provided for
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Feeding And Controlling Fuel (AREA)
Description
Gerät zur Anzeige einer unteren Sauerstoffkonzentration von Grubenwettern Zusatz zum Patent: 1 177247 Gegenstand der Erfindung ist ein Gerät zur Anzeige einer unteren Sauerstoffkonzentration von Orubenwettern, beruhend auf der elektrischen Messung der von einer Flamme gelieferten Wärmeenergie, das aggregiert ist mit dem Batterieteil einer Kopfleuchte, nach Patent 1 177 247.Device for displaying a lower oxygen concentration in mine weather Addendum to patent: 1 177247 The invention relates to a device for displaying a lower oxygen concentration of orubian weather, based on the electrical Measurement of the thermal energy delivered by a flame that is aggregated with the Battery part of a head light, according to patent 1,177,247.
Bei dem Gerät nach Patent 1 177 247 erfolgt die Sauerstoffmangelanzeige in einer Ausführungsform durch eine durch eine brennbare Flüssigkeit gespeiste Flamme, deren Licht von einer Photodiode abgetastet wird und je nach der Intensität der Flamme über einen Transistorverstärker einem akustischen Signalgeber zugeführt wird. In the device according to patent 1,177,247, the oxygen deficiency display occurs in one embodiment by a flame fed by a combustible liquid, whose light is scanned by a photodiode and depending on the intensity of the Flame is fed to an acoustic signal generator via a transistor amplifier.
Das Gerät nach dem Hauptpatent, bei der der Batteriebehälter mit einer Sauerstoffmangelanzeige eine handliche Einheit bildet, hat sich im Betrieb hervorragend bewährt, da es das erste handliche Klein-- gerät war, das vom Bergmann ohne starke Behinderung mitgeführt werden konnte, und eine einwandfreie vernehmbare Gefahrenanzeige bei Sauerstoffmangel ermöglichte. The device according to the main patent, in which the battery container with an oxygen deficiency indicator forms a handy unit, has become in operation Tried and tested, as it was the first small, handy device made by the miner Could be carried without severe disability, and a flawless audible Danger indication in case of lack of oxygen made possible.
Nur die Verwendung der Photoelemente, die das Licht der Flamme abtasteten, befriedigte nicht, da sie nicht empfindlich genug und bei unzulässig starker Erwärmung störanfällig sind. Only the use of the photo elements that scanned the light of the flame, not satisfied because it is not sensitive enough and if it is heated to inadmissibly high levels are prone to failure.
Photoelemente müssen in genügender Nähe der Flamme angebracht werden, um auch bei Neigung der Flammenachse noch genügend anzusprechen, und werden dabei unter Umständen unzulässig stark erwärmt. Photo elements must be placed in sufficient proximity to the flame, in order to respond sufficiently even when the flame axis is inclined, and are thereby possibly excessively heated.
Erfindungsgemäß erfolgt daher die Sauerstoffmangelanzeige dadurch, daß die Flamme von einem oder mehreren in Reihe geschalteten Thermoelementen abgetastet wird und über einen Verstärker ein akustisches Signal ein- bzw. ausschaltet. According to the invention, therefore, the oxygen deficiency display is carried out by that the flame is scanned by one or more thermocouples connected in series and switches an acoustic signal on or off via an amplifier.
Die Thermoelemente sind weniger störanfällig als die Photoelemente. Sie können in genügender Nähe der Flamme bzw. in der Flamme selbst eingebracht werden, ohne daß sie schädlichen Wärmeeinwirkungen unterliegen. The thermocouples are less prone to failure than the photo elements. They can be introduced in sufficient proximity to the flame or in the flame itself, without being subject to harmful effects of heat.
Auch kommt man bei Verwendung von Thermoelementen mit schwächeren Verstärkern für den Signalgeber aus, da den Thermoelementen beachtliche Ströme entnommen werden können, wenn ihr Innenwiderstand klein gehalten ist, denn es wird eine bessere Leistungsanpassung an den niederohmigen Eingang einer Transistor-Verstärker-Schaltung erreicht. When using thermocouples, you also get weaker ones Amplifiers for the signal generator because the thermocouples draw considerable currents if its internal resistance is kept low, because it will be better Power adjustment to the low-resistance input of a transistor amplifier circuit achieved.
Dadurch ist eine raum- und kostensparende Vereinfachung der Sauerstoffmangelanzeige gegeben. Auch stehen gerade für den interessierenden Temperaturbereich relativ billige Mittel zur Messung thermoelektrischer Spannungen zur Verfügung. Mit gutem Erfolg kann Kupfer-Konstantan oder Eisen-Konstantan verwendet werden. This is a space and cost-saving simplification of the oxygen deficiency display given. Relatively cheap ones are also available for the temperature range of interest Means for measuring thermoelectric voltages are available. With good success copper constantan or iron constantan can be used.
Bei dem Gerät nach der Erfindung wird als Signalgeber ein Tonfrequenzgenerator verwendet, dessen Frequenz langsam periodisch variiert, so daß der Wamton sich deutlich von Umgebungsgeräuschen unterscheidet. In the device according to the invention, a tone frequency generator is used as a signal generator is used, the frequency of which varies slowly and periodically, so that the wamton becomes clear differs from ambient noise.
An Hand der Figur wird eine mögliche Ausführungsform des erfindungsgemäßen Gerätes und die Funktionsweise der Sauerstoffmangelanzeige näher erörtert. A possible embodiment of the invention is based on the figure Device and how the oxygen deficiency indicator works.
Ein mit flüssigem Butangas gefüllter Tank 1 trägt ein einstellbares Reduzierventil 2 und eine von der Einstellung dieses Reduzierventils unabhängige Absperrvorrichtung 3. Nur diese ist dem Träger des Gerätes von außen zugänglich. Wird die geöffnet, so entströmt dem Ventil Butangas. Dieses wird durch elektrisches Aufheizen der Platinwendel 4 entzündet. A tank 1 filled with liquid butane gas carries an adjustable Reducing valve 2 and one that is independent of the setting of this reducing valve Shut-off device 3. Only this is accessible to the wearer of the device from the outside. If the is opened, butane gas flows out of the valve. This is done by electrical Heating the platinum coil 4 ignites.
Die Luft wird der Flamme über die axialen Segmentschlitze des Schutzmantels 5, der zugleich zur Luftumlenkung um 900 dient, und über die Zuluftsiebe 6 und 7, die aus nichtrostendem Edelstahl bestehen, zugeführt. Die Abgase werden über die Abgassiebe 8, 9 und 10 und über die Deckplatte 11, die wieder zugleich als mechanischer Schutz für die Siebe und zur Umlenkung der Gase um 900 dient; abgeleitet.The air is fed to the flame through the axial segment slots of the protective jacket 5, which also serves to deflect air by 900, and via the supply air sieves 6 and 7, made of stainless steel. The exhaust gases are on the Exhaust strainers 8, 9 and 10 and over the cover plate 11, which again at the same time as a mechanical Serves to protect the sieves and to divert the gases around 900; derived.
In die Flamme ragen ein oder mehrere, elektrisch in Serie geschaltete Thermoelemente 12, die von der flamme beheizt werden. Dadurch entsteht an ihnen eine Thermosspannung. Diese wird in einem Transistorverstärker 13 verstärkt, der aus der Kopfleuchten-Batterie 14 gespeist wird. Die verstärkte Thermosspannung sperrt einen transistorisierten Tonfrequenzgenerator periodisch variierender Frequenz 15, der auf eine schlagwettersichere dynamische Lautsprecherkapsel 16 arbeitet. One or more, electrically connected in series, protrude into the flame Thermocouples 12 from the flame can be heated. This creates a thermal voltage on them. This is amplified in a transistor amplifier 13, which is fed from the headlight battery 14. The increased thermal voltage blocks a transistorized audio frequency generator of periodically varying frequency 15, which works on a fire-weatherproof dynamic loudspeaker capsule 16.
Sobald die Flamme erlischt, entfällt die Thermosspannung; damit wird die Sperrung des Tonfrequenzgenerators aufgehoben; die Lautsprecherkapsel gibt nun einen in seiner Frequenz periodisch veränderlichen Heulton als Warnsignal ab. Der Bergmann kann mit Hilfe des guten Lichtes seiner Kopfleuchte rasch aus dem Gefahrenbereich flüchten. As soon as the flame goes out, there is no thermal voltage; so will the blocking of the audio frequency generator is canceled; the speaker capsule is now there emits a howling sound that is periodically variable in its frequency as a warning signal. Of the Bergmann can quickly get out of the danger area with the help of the good light from his headlamp flee.
Durch Druck auf einen Zündknopf wird die Flamme wieder gezündet, womit das Warnsignal verstummt. The flame is re-ignited by pressing an ignition button, which silences the warning signal.
Der Tonfrequenzgenerator wird auch dann gesperrt, wenn die mit dem Wamgerät verbundene Leuchte in der Lampenstube an das Ladegestell angeschlossen wird. Erst dann kann die Flamme gelöscht werden, ohne daß ein Warnsignal ausgelöst wird. The tone frequency generator is also blocked if the with the Warning device connected lamp in the lamp room connected to the charging frame will. Only then can the flame be extinguished without triggering a warning signal will.
In der Praxis wird also die Kopfleuchte mit Wamgerät dem Ladegestell entnommen. Das Warnsignal ertönt. Nun wird die Absperrvorrichtung geöffnet und die Flamme gezündet. Das Warnsignal verstummt. In practice, the head light with warning device becomes the charging frame taken. The warning signal sounds. Now the shut-off device is opened and the Flame ignited. The warning signal stops.
Nach der Schicht wird erst die Absperrvorrichtung geschlossen, dann muß als Kontrolle für einwandfreie Funktion der Absperrvorrichtung und des Warngerätes das Warnsignal ertönen. Beim anschließenden Einschalten des Kopfstückes in den Ladekreis muß der Warnton verstummen. Damit ist bei Schicht- beginn und Schichtende eine zwangläufige Funktionsprüfung erreicht. After the shift, the shut-off device is closed first, then must be used as a control for the proper functioning of the shut-off device and the warning device the warning signal will sound. When the head piece is subsequently switched on in the charging circuit the warning tone must be silent. This means that with shift beginning and end of the shift is an inevitable one Function test achieved.
Claims (4)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEC34044A DE1221815B (en) | 1964-10-08 | 1964-10-08 | Device for displaying a lower oxygen concentration in mine weather |
NL6509022A NL6509022A (en) | 1964-10-08 | 1965-07-13 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEC34044A DE1221815B (en) | 1964-10-08 | 1964-10-08 | Device for displaying a lower oxygen concentration in mine weather |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1221815B true DE1221815B (en) | 1966-07-28 |
Family
ID=7021118
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEC34044A Pending DE1221815B (en) | 1964-10-08 | 1964-10-08 | Device for displaying a lower oxygen concentration in mine weather |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE1221815B (en) |
NL (1) | NL6509022A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2510189A1 (en) * | 1975-03-08 | 1976-09-16 | Friedrichsfeld Gmbh | Air flow rate adjusting system for burners - has ceramic oxygen sensor in flue for controlling air blower |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE217416C (en) * | ||||
DE679827C (en) * | 1937-02-02 | 1939-08-14 | Friemann & Wolf G M B H | Firedamp indicator in the form of a safety lamp with a roaring flame |
GB713807A (en) * | 1951-03-31 | 1954-08-18 | Marcello Lorenzetto | An apparatus for automatic visual and/or acoustic signalling of the presence of an inflammable gas in any atmosphere |
-
1964
- 1964-10-08 DE DEC34044A patent/DE1221815B/en active Pending
-
1965
- 1965-07-13 NL NL6509022A patent/NL6509022A/xx unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE217416C (en) * | ||||
DE679827C (en) * | 1937-02-02 | 1939-08-14 | Friemann & Wolf G M B H | Firedamp indicator in the form of a safety lamp with a roaring flame |
GB713807A (en) * | 1951-03-31 | 1954-08-18 | Marcello Lorenzetto | An apparatus for automatic visual and/or acoustic signalling of the presence of an inflammable gas in any atmosphere |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2510189A1 (en) * | 1975-03-08 | 1976-09-16 | Friedrichsfeld Gmbh | Air flow rate adjusting system for burners - has ceramic oxygen sensor in flue for controlling air blower |
Also Published As
Publication number | Publication date |
---|---|
NL6509022A (en) | 1966-04-12 |
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