DE562394C - Device for telecommunication of the water level of steam boilers by electrical means using glow lamps - Google Patents
Device for telecommunication of the water level of steam boilers by electrical means using glow lampsInfo
- Publication number
- DE562394C DE562394C DER80136D DER0080136D DE562394C DE 562394 C DE562394 C DE 562394C DE R80136 D DER80136 D DE R80136D DE R0080136 D DER0080136 D DE R0080136D DE 562394 C DE562394 C DE 562394C
- Authority
- DE
- Germany
- Prior art keywords
- water level
- electrodes
- telecommunication
- steam
- glow lamps
- 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
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/24—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of resistance of resistors due to contact with conductor fluid
- G01F23/241—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of resistance of resistors due to contact with conductor fluid for discrete levels
Landscapes
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Discharge Heating (AREA)
Description
Vorrichtung zum Fernmelden des Wasserstandes von Dampfkesseln auf elektrischem Wege mittels Glimmlampen Die Erfindung betrifft die besondere Ausgestaltung einer Vorrichtung zum Fernmelden des Wasserstandes von Dampfkesseln auf elektrischem Wege mittels Glimmlampen mit Edelgasfüllung, bei welcher die die Höhe des Wasserstandes meldenden Elektroden in bekannter Weise von oben durch den Dampfraum des Wasserstandgefäßes hindurch verschieden tief in das 'Wasser eintauchen.Device for telecommunication of the water level of steam boilers electrical way by means of glow lamps The invention relates to the particular embodiment a device for telecommunication of the water level of steam boilers on electric Paths using glow lamps with inert gas filling, in which the height of the water level reporting electrodes in a known manner from above through the steam space of the water level vessel Immerse yourself in the water to different depths.
Bei derartigen Vorrichtungen besteht die Gefahr, daß von der isoliert eingeführten Elektrode zum Standgefäß, durchdessen W andung bzw. Deckel hindurch die Elektroden eingeführt sind, Kriechströme auftreten, die die Isolation überbrücken. Da nämlich das Standgefäß meist außerhalb des Dampfkessels angeordnet ist und da der in seinem oberen Teil befindliche Sattdampf am Deckel und auch an den inneren Wandungen des Standgefäßes sich niederschlägt, so bildet sich zwischen Elektrode und Standgefäß über die Isolationsschicht hinweg eine wenn auch nur hauchdünne Wasserschicht, die aber genügt, einen Strom von einer solchen Stärke zu leiten, daß die zur 'Meldung des Wasserstandes benutzten Glimmlampen aufleuchten.With such devices there is a risk of being isolated from the introduced electrode to the jar, through its wall or cover If the electrodes are inserted, leakage currents occur that bridge the insulation. Because the jar is usually arranged outside the steam boiler and there the saturated steam located in its upper part on the lid and also on the inner ones If the walls of the standing vessel is reflected, it is formed between the electrode and standing vessel a layer of water, even if only a very thin layer, over the insulation layer, but this is sufficient to conduct a current of such strength that the report the glow lamps used light up the water level.
Nach der Erfindung wird daher die Isolationsschicht sehr lang gemacht, so daß auch die Kriechstrecke sehr lang wird, jedenfalls so lang, daß Strom von der in Frage kommenden Stärke nicht fortgeleitet werden kann. Dies wird dadurch erzielt, daß die Elektrodenstifte auf ihrer ganzen Länge mit eitler guten isolierenden Emailschicht überzogen werden, so daß nur das außerhalb des Gefäßes befindliche Ende der Elektrode und das äußerste Ende der im Gefäß befindlichen Elektrode von dieser Isolation frei bleiben. Dabei sind die Elektrodenstifte von geringem Durchmesser. da sie ja nur ganz geringe Ströme zu leiten haben.According to the invention, the insulation layer is therefore made very long, so that the creepage distance is also very long, at least so long that current of the strength in question cannot be passed on. This is because of this achieved that the electrode pins with vain good insulating along their entire length Enamel layer are coated so that only that located outside the vessel End of the electrode and the extreme end of the electrode in the vessel of this isolation remain free. The electrode pins are small in diameter. since they only have to conduct very small currents.
Ein weiteres Mittel, die Bildung von Kriechströmen zu verhindern; besteht darin, daß man in dem Dampfraum des Standgefäßes eine Zusatzheizung anordnet, die den im Standgefäß befindlichen Sattdampr um ein geringes überhitzt. Es sind nur wenige Grade iberhitzung notwendig, um den Sattdampf vollkommen zu trocknen und um die Elektroden und die Wandungen des Gefäßes etwas über Sattdampftemperatur zu erwärmen, so daß an ihnen ein Niederschlagen des Dampfes überhaupt nicht stattfinden kann.Another means of preventing the formation of leakage currents; consists in arranging additional heating in the steam space of the standing vessel, which slightly overheats the Sattdampr in the jar. There are only a few degrees of superheating necessary to completely dry the saturated steam and around the electrodes and the walls of the vessel slightly above saturated steam temperature to be heated so that the vapor does not deposit on them at all can.
Da das Aufbringen der Emailschicht auf die dünnen Stäbe nur dann fehlerlos gelingt, wenn alle Vorsprünge an den Stäben vermieden werden, so werden diese Elektrodenstifte als ganz glatte, dünne Stäb-;° von gleichmäßigem Durchmesser hergestellt. Dadurch besteht aber die Gefahr, daß die Stäbe infolge des Dampfdruckes durch die Stopfbuchse nach außen gedrückt werden. Lm dies zu verhindern, wird oberhalb des Deckels ein durch Stützen mit ihm fest verbundenes, isoliertes Gegenlager angeordnet, welches diesen Axialschub der Elektrode aufnimmt.Since the application of the enamel layer to the thin rods is only flawless if all projections on the rods are avoided, then these electrode pins become successful made as very smooth, thin rods; ° of uniform diameter. Through this but there is a risk that the rods as a result of the steam pressure through the stuffing box be pressed outwards. To prevent this, a that is firmly connected and insulated with it by supports Arranged counter bearing, which absorbs this axial thrust of the electrode.
In den Zeichnungen ist die Erfindung in ihrer Anwendung bei einem Dampfkessel dargestellt. Abb. i zeigt einen senkrechten Schnitt durch das Standgefäß mit den Elektrodenstiften und mit der Schaltung der Meldelampen. Abb. 2 zeigt dieselbe Anordnung mit einer elektrischen Zusatzheizung. Abb. 3 zeigt die Anordnung des äußeren Gegenlagers für die Elektroden.In the drawings, the invention is in its application to a Steam boiler shown. Fig. I shows a vertical section through the jar with the electrode pins and with the switching of the indicator lamps. Fig. 2 shows the same Arrangement with an additional electrical heater. Fig. 3 shows the arrangement of the outer Counter bearing for the electrodes.
Das Standgefäß a ist durch das Rohr b mit dem Dampfraum und durch das Rohr c mit dem Wasserraum des Oberkessels d verbunden, so daß in ihm derselbe Wasserstand herrscht wie im Oberkessel. Durch den Deckel e dieses Standgefäßes sind dünne, stiftförmige Elektroden f hindurchgeführt, die mit Ausnahme der beiden Enden vollständig mit einer gut isolierenden Emailschicht g überzogen sind. Von diesen Elektroden f gehen in bekannter Weise Leitungen k ab, «-elche Glimmlampen l Strom zuführen, der mittels eines Transformators lz oder auch unmittelbar aus dem Netz tz entnommen wird und dessen anderer Pol i am Standgefäß bzw. am Kessel liegt. Die Elektroden tauchen entsprechend den zu meldenden Wasserstandshöhen verschieden tief in das Standgefäß ein.The upright vessel a is through the pipe b with the steam space and through the pipe c is connected to the water space of the upper boiler d so that it is the same The water level is the same as in the upper boiler. Through the lid e of this jar are thin, pin-shaped electrodes f passed through, with the exception of the two ends are completely covered with a well-insulating enamel layer g. Of these Electrodes f go from lines k in a known manner, "- those glow lamps l current feed that by means of a transformer lz or directly from the network tz is removed and the other pole i is on the container or on the boiler. the Electrodes dive to different depths depending on the water level to be reported into the jar.
Soll eine Zusatzheizung angebracht werden, so bringt man sie gemäß Abb.2 in einer besonderen Hülse o unter, welche in den Dampfraum des Standgefäßes hineinragt und ebenfalls am Deckel befestigt ist. Vorzugsweise wird man einen Heizwiderstand p bekannter. Art benutzen, den man unmittelbar an das Netz anschließen kann. Um ein Herausdrücken der Elektroden durch die Stopfbuchsen zu verhindern, ordnet man oberhalb derselben ein isoliertes Gegenlager iv an, welches durch Streben mit dem Deckel e verbunden ist und den Axialschub der Elektroden aufnimmt.If additional heating is to be installed, it is brought in according to Fig.2 in a special sleeve o underneath, which in the steam space of the standing vessel protrudes and is also attached to the lid. Preferably one becomes a heating resistor p known. Use type that can be connected directly to the network. Around To prevent the electrodes from being pushed out through the stuffing boxes, one arranges above the same an isolated counter bearing iv, which by striving with the Cover e is connected and absorbs the axial thrust of the electrodes.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DER80136D DE562394C (en) | 1929-12-17 | 1929-12-17 | Device for telecommunication of the water level of steam boilers by electrical means using glow lamps |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DER80136D DE562394C (en) | 1929-12-17 | 1929-12-17 | Device for telecommunication of the water level of steam boilers by electrical means using glow lamps |
Publications (1)
Publication Number | Publication Date |
---|---|
DE562394C true DE562394C (en) | 1932-10-25 |
Family
ID=7416216
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DER80136D Expired DE562394C (en) | 1929-12-17 | 1929-12-17 | Device for telecommunication of the water level of steam boilers by electrical means using glow lamps |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE562394C (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3094106A (en) * | 1960-04-12 | 1963-06-18 | North American Aviation Inc | Liquid metal level gauge |
DE3000585A1 (en) * | 1979-01-10 | 1980-07-24 | Nissan Motor | FUEL FILTER |
DE2927125A1 (en) * | 1979-07-05 | 1981-01-08 | Volkswagenwerk Ag | Signalling system indicating given fuel separator water level - using electrode pair impedance to damp oscillator signal |
-
1929
- 1929-12-17 DE DER80136D patent/DE562394C/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3094106A (en) * | 1960-04-12 | 1963-06-18 | North American Aviation Inc | Liquid metal level gauge |
DE3000585A1 (en) * | 1979-01-10 | 1980-07-24 | Nissan Motor | FUEL FILTER |
DE2927125A1 (en) * | 1979-07-05 | 1981-01-08 | Volkswagenwerk Ag | Signalling system indicating given fuel separator water level - using electrode pair impedance to damp oscillator signal |
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