SU48463A1 - Adaptation to the steam dryer to control the bypass to the boiler of the separated water from the sump of the steam dryer - Google Patents

Description

In steam locomotives, in order to reduce the moisture content of the steam, which lowers the superheat temperature and increases the fuel consumption, steam dryers are installed to eliminate water droplets from the steam. To transfer the water generated during the operation of the steam dryer, there is a device controlling the transfer of the specified water from the steam tank to the boiler, and to automatically communicate the water space of the tank to the boiler, the drain valve of the first cylinder is connected to the auxiliary cylinder piston controlled by the distribution valve. WITH . The purpose of the piston permutation, depending on the position of the regulator and the presence of a vacuum in the sump, suggests that the spool be made differential. To control the water sump from the regulating thrust, a modified spool is supplied, the stem of which is connected to the thrust regulator, the spool being balanced and its inter piston space connected to the boiler or to the compressed air reservoir.

In FIG. 1 is a schematic view of a proposed fixture located on a boiler; FIG. 2 is a side view of it; FIG. 3 is a view in axial section through valves with a stem and a spool controlling them; FIG. 4-scheme of water distribution zolotnike.

The steam dryer / installed on the boiler of the locomotive is connected to the main steam shut-off valve by a pipe 2, and to pipes 5 with a water collector 5 (Figs. 1 and 2).

The latter is connected to the valve body 7 / f (Fig. 3) by pipe b, which divides the cavity of the pipe 6 from the cavity of the pipe 9 leading to the boiler.

The bolt // valve is connected by means of a coupling 12 to a rod loaded with a spring / 5 piston 14 of the auxiliary cylinder 13, communicating through the window 16 with the cylinder 17 of the differential spool. The latter has two pistons, a smaller 18 and a larger 19, rigidly interconnected by a common rod. Accordingly, the pistons form three cavities 20, 23 and 26, of which the first through window 2 / pipe 22 (FIG. 3 and 1) is connected to the boiler, the second through window 24 and pipeline 25 with a water collector, and the third 26 through window 27 - the atmosphere. During operation, the steam passes through the Steam dryer 1 in the direction of the arrows (Fig. 1) and passes through the pipe 2 to the main valve. Separated water, settled in the steam dryers, through pipe 3 enters the catchment basin 5 and from there through the pipeline into the cavity of the housing 7 of valve 10.

 During the open regulator, in the presence of a vacuum in the collector 5, and therefore in the cavity 23 of the spool, the pistons 18-19 move to the right, and the cavity of the cylinder 13 through the window 16 communicates with the atmospheric cavity 26 of the valve.

With this spring. 75 moves the piston 14 to the right and closes the valve 10 (FIG. 3), thereby dissociating the sump with the boiler and eliminating the possibility of water getting into the regulator tube at low pressures. At equal pressures in the boiler and collector, the pistons 18-19, due to the difference in their diameters and, consequently, the pressure difference, move to the left (dashed line) and the pressure of the medium from the cavity 25, entering the cavity of the cylinder 13, will overcome the force of the spring 15 and open CLANAN 10, through which water from the catchment basin 5 enters pipe 9, and from there into the boiler.

In FIG. 4 depicts a modified spool in which the pistons 28 are mounted on a common rod 29 connected to the thrust regulator 3J by the link 30 (Fig. 1 and 4). A spool of only one tube 22 is connected to the boiler, which is connected by outlet 35 of cavity 34; the cavities 32 and 36 are connected with the corresponding atmospheric windows 55, 57 (Fig. 4). The iJ-cavity can be communicated not with the boiler, but with any air reservoir.

When the regulator is open, the pistons 28 of the spool move to the left, with the window / b communicating with the atmospheric cavity 56, and the piston J4 by the action of the spring / 5 (not shown in the drawing), similar to the spring in FIG. 3, moves and closes the JO valve. .

With the regulator closed, the pistons move to the right (see their dotted position); at that, the window J6 communicates with the cavity 34, having a pressure, the piston J4, compressing the spring / 5, opens the valve 10, which communicates the water collector 5 with the boiler. The movement of the pistons 28 is carried out by a regulating thrust 5 / through the link 30 (FIGS. 1 and 4).

The subject matter of the invention.

Claims (4)

1. An attachment to a steam dryer for controlling the separation of separated water from the sump to the boiler, characterized in that in order to automatically communicate the water space of the sump with the boiler, the drain valve of the sump is connected to the spring-loaded piston of the auxiliary cylinder moved by the action of steam or compressed air from the distributor spool. 2. The form of the device according to claim 1, characterized in that, in order to rearrange the piston depending on the position of the regulator and the presence of a vacuum in the sump, a differential spool is used, the larger piston of which is loaded by the pressure of the sump steam and (Fig. 3). 3. The form of making the device according to claim 1, characterized in that, in order to control the catchment tank when the regulator is open and vice versa, the distribution valve spool is connected to the regulating rod (Fig. 4). 4. The form of the device according to claim 3, characterized in that the distribution valve is balanced with the connection of the interpiston space with a boiler or a reservoir of compressed air. 1L spike