DE441626C - Steam water trap for high pressure steam systems - Google Patents

Description

(Sch 75 *

The invention relates to a steam trap, which in systems with the highest Steam pressure is useful because it requires only one float with so little buoyancy as is the case with a correspondingly difficult for the purpose of achieving sufficient resistance to high pressure trained swimmer is easy to reach.

ίο The subject matter has details its design in common with known devices. He owns in a familiar way a control piston which acts on the water outlet element and which is constantly on one side is under the pressure inside the device, while its other side through a shut-off device adjusted by a float alternating with the one under pressure standing inside the device and is connected to the outside air. While but in the known devices that have the features mentioned, the shut-off device, which establishes the connection of one control piston side with the outside air, if it rests on its seat, is loaded or unloaded by the pressure inside the device. is only incompletely relieved, so that for its adjustment one in such devices For very high steam pressure, strong buoyancy of the float that cannot be achieved is necessary, according to the invention, the shut-off device so arranged and connected to the swimmer that it is affected by the buoyancy of the swimmer and the pressure in the Inside the device in the same. Senses is affected.

After filling the device, a connection of the one control

on the piston side with the outside air producing shut-off devices is expediently a second Connected shut-off device, which piston side the control brought into connection with the outside air locks against the pressure inside the device. Trap with an association two such valves are also already known, but these are known The valve which removes the pressure ίο from the pressure ο inside the diverter valve does not drain the valve always, but only in the event of a sudden strong drainage, and the arrangement This valve is, for its purposes, such that it is proportionate significant time between the relief of one control piston side by establishing a connection between it and the outside air and the closures of this control piston side against the pressure in In-π what the arrester cherishes.

In the case of the subject matter of the invention, however, the two valves should be connected to one another in this way that they work in immediate succession.

The drawing represents a steam drain in accordance with the invention a longitudinal section.

The container α, to which the steam water flows through the nozzle b , is emptied through the nozzle c. At the inner opening of the nozzle c is the cylindrical housing d, in which the piston e is movable. The piston also serves as an exhaust valve cone. The outlet opening f is closed by a conical body g directly adjoining the cylindrical part of the piston. The water is fed to the opening f through channels h in the side wall of the housing d . The piston e has a bore i which can be closed by a valve cone k on the rod I. On the rod U, which is passed through an opening m in the bottom of the cylinder d , there is also the valve cone n, through which the opening m can be closed. The position of the valve cones k and η is such that when one of the openings i and m is closed, the other is free. The rod I is adjusted by a lever 0 which is connected to a float ρ following the water level in the container α or a balanced float.

During the filling of the container a , the parts of the device assume the position shown in the drawing. When the float is lifted by the rise in the water, the lever 0 is adjusted so that the opening m is blocked, while through the bore i a connection between the space q above the piston e and the nozzle c, which is under atmospheric pressure will be produced. This creates an overpressure on the lower side of the piston e , so that the piston is raised and the opening f is released for the water that has accumulated in the container α to exit.

If the container is emptied so far that the float p sinks, the space q is closed from the outside air by the valve cone k and its connection with the pressurized inner cavity of the container α is restored. Now there is a lower pressure below the piston e due to the flow velocity of the outflowing water than in the space e, so that a downward gierichüetier overpressure acts on the piston, by which the valve cone g is pressed onto its seat.

Claims (2)

Patent claims: i. Steam water trap for high-pressure steam systems with a control piston that adjusts the water outlet element and is constantly under pressure inside the trap on one side, the other side of which alternates with the pressurized interior of the trap and with the outside air through a shut-off device adjusted by a float is connected, characterized in that the shut-off element (k) is so arranged and connected to the float (p) that it is influenced in the same way by the buoyancy of the float (/>) and the pressure inside the trap. 2. Steam water trap according to claim 1 with two shut-off devices influenced by the float, one of which connects one control piston side with the outside air, while the other closes the same control piston side against the pressure inside the trap, characterized in that the two shut-off devices (n, k) are connected to one another in such a way that they always both have an effect, in direct succession. 1 sheet of drawings.