DE26712C

DE26712C - Innovation in the electrical safety device patented under N. 24087

Info

Publication number: DE26712C
Application number: DENDAT26712D
Authority: DE
Original assignee: J. CH. VOILIN in Dresden

Description

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

In der dargestellten elektrischen Sicherheitsvorrichtung für Dampfkessel hat die durch Sinken oder Steigen des Wasserstandes in seine Grenzlagen in Function tretende Einrichtung zur Contactbildung dahin eine Abänderung erlitten, dafs der Contactschlufs aufserhalb des Kessels verlegt ist, so dafs die Contacttheile zu jeder Zeit nachgesehen werden können. Aufserdem unterliegen diese Theile bei der neuen Anordnung nicht der directen Einwirkung der Hitze des Dampfes oder des Wassers; ferner fallen auch die im Dämpf- oder Wasserraum schwierig anzubringenden Isolirungen fort.In the illustrated electrical safety device for steam boilers, the by sinking or if the water level rises to its limit positions, a device coming into operation for contact formation suffered a change so that the contact closure outside of the Kessel is relocated, so that the contact parts can be checked at any time. Moreover, in the new arrangement these parts are not subject to the direct action of the Heat of steam or water; furthermore, those in the steam or water room also fall insulation that is difficult to apply.

Es ist mit der Linie χ -χ der höchste, mit z-z . der niedrigste zulässige Wasserstand angedeutet. Unmittelbar unter dem niedrigsten zulässigen Wasserstand zweigt ein Rohr b nach oben ab, das in den Schwimmerraum c mündet; von letzterem erstreckt sich eine Röhre d nach oben, die durch ein Seitenrohr e zum Ablafshahn / führt. Wird dieser Hahn geöffnet, sobald sich bei normalem Wasserstand Dampfdruck im Kessel gebildet hat, so füllen sich b e d e mit Wasser und bleiben bei Schlufs des Hahnes f gefüllt.It is the highest with the line χ -χ , with zz. the lowest permissible water level indicated. Immediately below the lowest permissible water level, a pipe b branches upwards, which opens into the float chamber c; from the latter a tube d extends upwards, which leads through a side tube e to the drain tap /. If this valve opens when has formed in normal water level pressure in the boiler, then fill with water and bede remain filled with f conclusion of the cock.

In die Kopfwand m des Rohres d ist das federnde Metallrohr g eingelöthet, dessen flachgedrücktes Ende den Metall- (Stahl-) Stab h umschliefst und mit diesem verlöthet ist. Die Verlängerung des Stabes h trägt den Schwimmer i. Der Contactstift k liegt demnach aufserhalb des Dampf- oder Wasserraumes. Dieser Stift ist in seinem Sitz isolirt, so dafs der Stromkreis von / nach k durch Schutzrohr g und Stab h nur geschlossen ist, wenn h gegen k anliegt.The resilient metal tube g is soldered into the head wall m of the tube d , the flattened end of which surrounds the metal (steel) rod h and is soldered to it. The extension of the rod h carries the float i. The contact pin k is therefore outside the steam or water space. This pin is insulated in its seat, so that the circuit from / to k through protective tube g and rod h is only closed when h is against k .

Die Theile sind nun so justirt, dafs, wenn der Schwimmerraum c mit Wasser gefüllt ist, die Kugel durch ihren Auftrieb den Stab h von dem Contactstiick k abbiegt. Fällt der Wasserstand unter ζ ζ, so dringt Dampf durch Rohr b in den Schwimmerraum c, das Sinken der Kugel verursacht ein Neigen des Stabes h nach k, der Contact vollzieht sich und der geschlossene Stromkreis kündet diesen Vorgang durch ein akustisches oder ein optisches Signal an.The parts are now adjusted so that when the float chamber c is filled with water, the buoyancy of the ball bends the rod h away from the contact piece k. If the water level falls below ζ ζ, steam penetrates through tube b into the float chamber c, the sinking of the ball causes the rod h to tilt towards k, the contact takes place and the closed circuit announces this process with an acoustic or optical signal .

Nach genügender Füllung des Kessels über den Stand ζ ζ kann man durch Oeffhen des Hahnes f den Schwimmerraum wieder füllen und darauf den Hahn schliefsen, wobei die Kugel steigt und den Contact unterbricht.After sufficient filling of the boiler over the level ζ ζ you can fill the float chamber again by opening the tap f and then close the tap, whereby the ball rises and interrupts the contact.

Dieselbe Einrichtung ist mit Hülfe des Schwimmers z'¹, des Rohres d\ des Metallrohres g\ des Stabes Λ¹ und Contactstiftes k^J zur Anzeige des erreichten Maximalwasserstandes auf der Linie x-x wiederholt, nur dafs hier ein Steigen der Kugel i^l den Contact zwischen /2' und k^l bewirkt.The same device is repeated with the help of the float z ' ¹ , the pipe d \ of the metal pipe g \ of the rod Λ ¹ and contact pin k ^J to indicate the maximum water level reached on the line xx , only that here a rise of the ball i ^l the contact between / 2 'and k ^l causes.

Als eine Modification der Einrichtung zur Signalisirung des niedrigsten Wasserstandes wird vorgeschlagen, die Kugel i durch ein Becken zu ersetzen, das, wenn der Dampf .in den Schwimmerraum eintritt, mit Wasser gefüllt bleibt, durch seine Schwere im DampfraumAs a modification of the device for signaling the lowest water level, it is proposed to replace the ball i with a basin which, when the steam enters the float chamber, remains filled with water due to its weight in the steam chamber

Claims

sinks and thereby inclines the rod h, while when the space c is completely filled with water, the rod h holds the basin in the normal position, i.e. H. so that the contact between h and k does not take place. In order to keep the tubes d d1 and the parts connected to them at as uniform a temperature as possible, both tubes can extend or hang downwards, which is achieved in the case of the tube d by turning the head piece of the float chamber c, while in the case of d 'the design changes makes it necessary as a knee tube. With this arrangement, both tubes d and d1 will always remain filled with water, namely d with the water pushed in by the steam, the tube dl with condensation water. In both cases, the play of the swimmers i i1 will produce the same effect, only the contact pin k must be placed in the tube d on the opposite side, at the point of /, so that the rod h comes into contact with the contact pin k when the ball sinks . In this case, the connecting pipe e can connect directly to c. With the arrangement of d1 as an elbow tube, the float i1 can be connected to the rod h by an angle in the same way as with i. 2 shows a modification insofar as the tube g is redesigned here into a short cone, at the tip of which the metal rod h and at the same time a metal sleeve η are soldered. This sleeve is provided with a screw in order to be able to fasten a glass rod p in the sleeve which carries the float i at its other end. By now the sheathing tube is provided with flanges, between which the flange-like approach of the tube g. is clamped and by making the float cylinder-shaped, all parts can be removed after closing the taps on the water level glass, adjusted, etc., and easily reinserted. The arrangement of the parts is said to have resulted in a precisely established contact between h and k in the experiments. The contact closure can be used in the manner described, except in the case of steam boilers, also in the case of reservoirs and so on, in order to display the water level. Godfather ν τ-An s ρ rüche:

1. The combined arrangement of the float i within the boiler room and the parts h and k causing the electrical contact outside the boiler room, from which they are separated by the protective tube g , for the interruption or closure of an electrical contact outside the closed steam boiler through the inside changes in the water level occurring in the closed steam boiler, avoiding any breakthroughs in the boiler wall for this purpose by means of stuffing boxes or other similar closing means.

2. The arrangement of the float chamber c, which communicates with the boiler below the lowest water level and with the pipe d , and which remains filled by the steam pressure at normal water level and is only emptied when the water level falls below the minimum limit, with the float sinking i (or a basin that remains full) in which room c the contact between h and k is established outside the steam room and the abnormal water level is indicated electrically.

3. The combined arrangement of the float i with the contact parts hk and protective tube g for the lowest water level and of the float i ' with the contact parts A ¹ k ¹ and protective tube g ¹ for the highest water level for electrical signaling of the entering maximum and minimum water levels of a steam boiler .

4. The modified device, Fig. 2, in which the tube g has a short conical shape and at the junction with h carries a sleeve which accommodates a rod / carrying the float i , as well as the attachment of the flange closure, all parts ig h np to be able to remove from the pipe d.

For this purpose I sheet drawings.