DE54175C - Device for regulating the supply of low-pressure steam boilers - Google Patents

Description

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PATENT OFFICE,

On the accompanying drawing a device for low pressure boilers is drawn by which the same are automatically fed if the water level drops or the steam pressure rises too high. The kettle is with two Provide safety devices, which can also be used individually.

The pipes α and b open into the boiler. The mouth of the former is approximately level with the kettle lid, while the mouth of the latter extends to the mark of the lowest water level. The feed water is supplied through the pipe c, which is provided with a shut-off valve c ¹ and a check valve c ² . As in the case of the usual devices, the same first gets through the pipe e into the vessel f, fills the same up to the pipe α and then flows through the same to the boiler. If the pressure in the boiler rises, so that the water pressure in pipe a, g and k is overcome, the water is driven out of this pipe connection, but does not get into the open air, as is the case with conventional devices, but is released through pipe h Steam water line respectively. fed back into the boiler. If the steam then flows in after the water has been ejected, it makes the whistle i sound, just as it did with the previous device.

But a special device has been made by which the automatic supply takes place in this case too, so that if the signal given by the escaping steam is overheard, the water in the boiler is nevertheless cooled. Namely, the rod / was installed in the tube k. This pushes up under the plate m, which is attached to the valve ν, which is located in the reservoir η . When the water is thrown out and the steam flows in, the rod made of a suitable metal is heated so that it expands and the valve ν is raised or lowered. opens. The water then flows through the pipe o ¹ to the pipe o, which surrounds the pipe k , and passes through the pipe o ² to the supply pipe c. The enclosed tube and also the rod / are cooled again by the water flowing down, so that the valve ν closes again. This feed device can also usually be used, so that the feed pipe c can be omitted. A suitable opening device is then attached to the valve ν.

The second safety device of the boiler is in communication with the pipe b. When the water has evaporated to the lowest water level, the steam escapes through the pipe b. This is connected to the pipe b ^l and to the pipe b ² leading to the pipe. When the steam escapes, the rod Z ^{1 is} also heated and expanded, so that the valve v ^{1 is} opened and the feed water passes through the pipe ρ to the steam water line or the boiler. Instead of the rods being made of material which expands greatly when heated, the tubes could also be made of such material

Claims (2)

Metal are made so that the opening of the valves is effected by them. Pateντ responses: i. To open the feed valves on low-pressure steam boilers, the arrangement of the rods / resp. I ¹ in a pipe k or b ¹ , which either opens into the steam space and is then kept closed by the water in a siphon vessel, the water only yielding to the excessively high steam pressure, or which reaches down to the water level, so that at If the water level is too low, steam escapes through the pipe, causing the rods to heat up and expand. / 'is brought about and the valves attached above ν respectively. v ^{l be} opened. 2. In the case of the under i. designated device the arrangement of the feed pipe ο in such a way that it surrounds the pipe k with the rod / so that it is cooled again by the flowing down feed water and the feed valve ν is closed again. For this purpose ι sheet of drawings.