DE53584C - Device for the sudden, substance-free shutdown of steam engines by means of counter-steam and non-return valves - Google Patents

Description

IMPERIAL

PATENT OFFICE.

PATENT LETTERING

CLASS 14: Steam Engines.

L. SCHAEFER in HALLE a. S.

and check valves.

.Patented in the German Empire from i. February 1890 onwards.

The apparatus shown on the accompanying drawing consists of one, are connected between the steam valve A and valve body B, Fig. 2, the switched double valve VV _1, the two bevel a hand lever H is by a · lever Combination such with a short shaft on whose free end , that by a small movement of the latter, the one valve is immediately closed and the other valve opened.

The lateral outlet α of the double valve is connected to the two ends of the steam cylinder by means of a T-shaped pipe branch r, so that when it is opened, respectively. Withdrawal of the lateral valve cone, both ends of the cylinder can be brought into direct contact with the fresh boiler steam.

At each end of the steam cylinder, adjacent to the branch pipe, there is a non-return valve RR ₁ , which has half the free cross-section of the large double valve and is arranged in such a way that during normal operation the working steam cannot escape into the pipeline described above, while on the other hand the counter-steam finds free passage.

Under normal conditions, the hand lever H is in the in Fig. 2 illustrated position and causes thus α the conclusion of the lateral valve exit, assisted by the force acting on the side bevel vapor pressure during the vertical steam path b verschliefsende poppet ·. is raised enough to allow the working steam to enter the valve body unhindered as long as the main shut-off valve is open.

In order to bring the machine in operation to an immediate standstill if necessary, the hand lever H is brought into the position indicated by a short jerk, thereby immediately closing the vertical valve of the apparatus and preventing further steam from entering the valve body. At the same time, however, the side valve V _{1 is also} open, from which the steam now enters the cylinder directly from both sides and brings about a pressure equalization on both sides of the steam piston K. With the help of the above-described check valves RR ₁ , the force resulting from the inertia of the flywheel is counteracted by appropriate compression of the steam in front of the piston and thus an immediate substance-free. Brought the machine to a standstill.

The hand lever can also mean in the manner indicated in the accompanying drawing brought a pulling device with all work spaces in connection and thereby the apparatus can be set to function. The same can be done by appropriate spring action and contact arrangement of the apparatus by an electric battery from all distances can be brought to effect.

Where the circumstances make it expedient

appear, you can use gate valves instead of valves without affecting the construction to change essentially in principle.

Claims (1)

Patent claim: A device for the immediate shutdown of steam engines in operation by counter-steam, consisting of the valves VV ₁ connected to the lever system h (instead of which suitable slides can be used), through which the steam access to the valve body can be closed, while at the same time through the Check valves i? -R ₁ provided pipes rr fresh steam is let into the cylinder on both sides of the piston and the machine is brought to a sudden standstill. For this purpose ι sheet of drawings.