DE62109C - Twin compound steam engine with single-acting cylinders and rotary valve control by means of two eccentrics - Google Patents

Description

IMPERIAL

PATENT OFFICE.

CLASS 14: Steam Engines.

The present innovations relate to single-acting, multi-cylinder high-pressure and double - or multiple - expansion steam engines.

The on the drawings in a vertical section through the cylinder and the frame (Fig. 1), a horizontal section through the high pressure valve body (Fig. 2), a horizontal section through the low pressure valve body (Fig. 3), a vertical section through the cylinder system C ¹ (Fig . 4), a vertical section through the cylinder system C ² (Fig. 5), a side view from the regulator side (Fig. 6) shown machine is a single-acting Woolf compound steam engine with two cylinder systems each consisting of a high pressure and a low pressure cylinder C ¹ and C ² , which act on two cranks adjusted under 180 °.

The four cylinders ft ¹ ft ² , η ¹ η ² are controlled with the aid of only two eccentrics E _x E ₂ , one of which (E ¹ ) both high pressure cylinders ft ¹ and ft ² , the other (E ² J both low pressure cylinders n ¹ and κ ² served.

In the cylinder system C * the pistons would have reached their upper dead point.

The fresh boiler steam now enters the machine through the steam supply pipe d , fills the valve body k common to the two high-pressure cylinders and is fed by means of the oscillating valve s ^l through the inflow channel a ¹ into the high-pressure cylinder ft ¹ , at the same time that enters the high-pressure cylinder Λ ^{2 of} the cylinder system C ² , steam has already expanded through the outflow channel b ² in the valve body K common to the two low-pressure cylinders and is passed by means of the valve S ¹ through the channel A ¹ into the low-pressure cylinder n ¹ . The steam, which has already been expanded for the second time in the low-pressure cylinder of the system C ^{2, flows through the outflow duct c 2} into the exhaust pipe R and from there into the open air, respectively. the condenser room. If, on the other hand, the pistons of the cylinder system C ^{2 have reached} their upper dead point, the boiler steam exits the valve body k by means of the valve s ² through the channel a ² into the high pressure cylinder ft ² , and the steam already expanded in the high pressure cylinder ft ^{1 becomes} passed through the channel b ¹ in the valve body K common to the two low-pressure cylinders and from there by means of the valve S ² through the channel A ² into the low-pressure cylinder n ² . The steam, which has already been expanded for the second time in the low-pressure cylinder n ^{l of} the system C ^{1 , passes through the channel c 1} into the exhaust pipe R and from there into the open air, respectively. into the condenser room. On the one outside of the frame, an axle regulator M is wedged on the crankshaft W, FIGS. 1 and 6, which acts on the eccentric E ¹ common to both high-pressure cylinders.

In the event of fluctuations in the number of revolutions of the machine, the ^{weights G 1} and G ² attached to the levers rotatable ^{about points P 1} and P ² move out of their original,

The position is fixed by the springs / " ¹ and f ² and, by means of the lever h, the eccentric E"", which can be displaced in a slide guide, is moved, whereby the filling of the high-pressure cylinder is regulated.

On the other outside of the frame, the eccentric E ^{2 is} keyed to both low-pressure cylinders on the crankshaft and works with an unchangeable filling.

The crankshaft W is extended beyond this latter eccentric in order to obtain space for the attachment of a coupling by means of which the machine to be operated is connected directly to the steam engine. The eccentric rods e ¹ and e ² , belonging to the eccentrics E ¹ and E ' ² , act directly on the levers I ¹ respectively wedged onto the slide shafts w ^x and w ^2. P.

On each slide shaft n> ¹ respectively. j *> ² is a slide system each, in the case shown of two slides s ¹ and s ² respectively. S ¹ and S ² consisting, attached.

These slides s ¹ and s ^{2 of} the two high-pressure cylinders, as well as the slides S ¹ and S ^{2 of} the two low-pressure cylinders, are fastened at different angles corresponding to the control, so that when the boiler steam passes through the channel by means of the high-pressure slide s ¹ a ^{1 is passed} into the cylinder h ¹ , the slide s ² attached to the slide s' on the same shaft w ¹ allows the steam already expanded in the high pressure cylinder h ² to flow through the channel b ² by means of the slide S ¹ into the low pressure cylinder η ^l . Similarly, the two slides S ¹ and S ^2, which are suitably attached to the slide shaft n> ^{2 of} the low-pressure cylinders, direct the steam into one low-pressure cylinder and at the same time cause the steam to flow out of the other low-pressure cylinder. Of course, the slide systems, in our case the slide s ¹ S ² and S ¹ S ² , can also be combined into one; in this case all inlet and outlet ducts for all cylinders must also be combined in the common valves.

This arrangement gives the control mechanism the simplicity that the high number of revolutions, for which this steam engine is built, appears necessary.

To prevent excessive pressure in the high-pressure cylinders, which may be caused by any accumulated water or excessive compression, a safety valve v ¹ and v ^{2 is} attached to each high-pressure cylinder.

Claims (1)

Patent claim: A twin composite steam engine with two single-acting high and low pressure cylinders h ^l h ² , κ ¹ « ² , of which h ^{1 is} above n ^v and h ^{2 is} above n ² and h ¹ and n \ as well as h ² and n ² with their pistons are each connected to a crank, which cranks are offset from one another at i8o °, with h ¹ and h ² by rotary sweeping valves s ¹ and s ² and n ¹ and n ² also by rotary rotary valves mounted on a common axis ¹ and S ² are controlled by means of the two eccentrics E ¹ and E ² so that the steam flows over from ft ¹ to n ² and from fi ¹ to n ² . For this purpose ι sheet of drawings.