DE110430C

DE110430C -

Info

Publication number: DE110430C
Application number: DENDAT110430D
Authority: DE

Description

Patenτ-Anspruch:Patenτ claim:

Einrichtung an Dampfkesseln zur seibstthätigen Aufserbetriebsetzung derselben bei Wassermangel, dadurch gekennzeichnet, dafs durch einen selbstthätig wirkenden Kolben, welcher mit dem Sicherheitsventil und dem Essenschieber in Verbindung steht, und der zugleich die Oeffnung eines in den Feuerraum führenden Dampfrohres steuert, beim Sinken des Wasserstandes unter eine gewisse Grenze das Oeffnen des Sicherheitsventiles, das Schliefsen des Essenschiebers und das Einströmen von Dampf in die Feuerung herbeigeführt wird.Equipment on steam boilers for self-operating the same Lack of water, characterized in that an automatically acting piston, which is in communication with the safety valve and the food pusher, and the at the same time controls the opening of a steam pipe leading into the combustion chamber when sinking the water level is below a certain limit, the opening of the safety valve, the closing the food pusher and the flow of steam into the furnace is brought about.

Hierzu 1 Blatt Zeichnungen.1 sheet of drawings.

Claims

IMPERIAL

PATENT OFFICE.

The device shown on the drawing in an exemplary embodiment The purpose of steam boilers is to prevent explosions due to a lack of water. This Purpose is achieved with the present facility in the following way:

When the water in the boiler has reached its lowest level, so that the flame tube runs the risk of becoming glowing, steam enters the tube c, which extends from an open valve α down to close to the flame tube b. This steam actuates a closure arranged in front of the valve α in a nozzle d; In the case shown, this closure is secured by a plug e made of easily meltable material, e.g. B. bismuth, which melts under the action of the steam and thus opens the opening of the tube h leading to a cylinder g . The steam enters the steam cylinder g and pushes the piston k downwards. Through this movement, the safety valve ν is opened by means of cables 1 and 2 and the food slide s is closed. Once this has happened and the piston has reached a certain level, the steam can enter the combustion chamber r through a pipe i attached to the cylinder on the left in the drawing and extinguish the fire. In this way, the boiler is switched on quickly and safely and the danger of an explosion is eliminated without any action on the part of the heater. The valve α is closed later, and a new bismuth plug can now be inserted into the nozzle e. After the supply has been completed, the boiler can be put back into operation.

The spring f below the piston can be regulated by raising or lowering the plate in such a way that the fire is only extinguished when the slide s is already closed and the steam has reached a certain high pressure. The spring also has the purpose of preventing a sudden impact on the safety valve. The ratio of spool and piston travel can be increased to 4: 1 or 6: 1 or even higher with medium-sized loose rollers.

The bismuth plug is arranged so that the molten metal can neither get into the kettle nor clog the valve. After removing the tube h , the plug can be replaced immediately.

Instead of the bismuth metal plug, a shut-off device with a float valve can be used or the like. Be attached.