SU42100A1 - Compound Steam Aid - Google Patents

Description

The proposed auxiliary serves for automatic transformation of the steam engine compound into a machine operating with the addition of fresh steam to a low pressure cylinder, and is designed in the form of a differential piston valve, shifting it with fresh steam pressure to one side and receiver pressure to another.

When operating steam-numpund machines, there is usually the following disadvantage. At low load, the machine operates with a certain amount of steam passed by the regulator; steam enters the high-pressure cylinder and produces the first stroke of the piston, and the second stroke is carried out with a new portion of the steam entering the small cylinder and the steam that has spent therein, acting in it in the large cylinder. When the load increases (for example, inserting a blank into the rollers), the speed immediately drops, the usual regulator opens and lets in an additional portion of steam only in the small cylinder, hence the first turn under these conditions is done at almost half the power, since the steam in the large cylinder did not get and the work of the machine is made by inertia of previously moving parts. If the machine does not stop, the speed is still reduced and the machine gives several turns.

not appropriate power and speed, despite open control.

To eliminate the aforementioned deficiency and to admit additional fresh steam into the large cylinder, as the load increases beyond a certain limit, the auxiliary tool described below serves.

In the schematic drawing of FIG. 1 depicts a view of a steam engine-compound with an auxiliary to it, operating under normal load; FIG. 2- the same, with increasing load over a certain size.

The auxiliary to the steam engine assembly is made in the form of a differential piston spool 6, controlled by a circular spool 7, acting on the common regulator 5 and allowing fresh steam to pass only with an increase in load over a certain limit and a strong drop in the number of revolutions of the regulator. The receiver 3 is connected to the cylinders of the pistons of the differential spool 6 by means of pipe 8, the large piston of which is under pressure from the receiver steam, and the small piston under the pressure of fresh steam when the valve 7 passes through it.

Under normal load and normal speed of the regulator 5, the machine works in the usual way (Fig. 1) - fresh steam is fed through the spool 4

into the high pressure small cylinder, from which the exhaust steam through receiver 3 enters the large low pressure cylinder 2. At the same time, steam from the receiver 3 enters the pipe 8 and presses on the large piston of the spool 6, so that the small piston closes the pipe 8 and blocks the entrance of the steam into the cavity of its cylinder. In the event of an increase in the load and decrease in the number of revolutions, the spool 7 (Fig. 2) opens fresh steam access to the small piston of spool b, which moves under pressure of the steam and opens the mouth of the pipe 8, fresh steam enters the large low pressure cylinder 2 than the power of the machine increases and the normal speed is reached.

As soon as the pressure in the receiver rises, the differential spool 6 under pressure of steam on its large piston will move again and stop the access of fresh steam to the pipe 8 and cylinder 2 and the machine will again work as a compound machine.

The subject matter of the invention.

Steam Engine Assist, characterized by its use

differential piston spool 6, the space of which under the large piston is connected on the one hand to the receiver and on the other hand to the space under the small piston into which fresh steam is injected through the valve being replaced by the regulator, in order to let in fresh steam into the large cylinder with increasing load over a certain limit.

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