SU78822A1 - Device for heating feedwater steam locomotive - Google Patents

Description

The present invention relates to devices for heating the feed water of a steam engine with a steam engine of a steam engine.

A distinctive feature of the proposed device is that, in order to create constant parameters of feed water in terms of pressure and temperature, it uses successively-included two storage tanks, the pressure of which is maintained above the operating steam pressure in the boiler.

FIG. 1 and 2 are schematic diagrams of the proposed device in two versions.

Water from the tender tank through pipe 14 flows to the feed steam pump 1 (Fig. 1) through the water ejector 2. From the first stage of the pump through pipe i, water under pressure of 1.5-2.5 at enters the jet mixing heater 4, into which is routed through pipe 5 from the main machine and auxiliary mechanisms, including feed pumps.

When passing through the 1-: p water of the jet of the jet through the preheater i, intense condensation occurs

steam that fills the chamber of the preheater, and due to this, Harpeii water up to 90-98 C.

From the preheater 4 hot water under a certain pressure created by the restoration of pressure in the injection diffuser of the preheater, and partly by gravity, enters the hot water cylinder of the pump i and from it through the valve Oi to the accumulator tank 7 and further along pipe 8 into second battery tank / 2. The accumulator tank 7 is connected to the second stage of the feed pump 1, and the upper cavity of the accumulator tank 7 is connected to the feed valves of the boiler .9.

In accumulator tanks 7 and / i, water successively passes a double filter: this is in grass filters 10 and 10.2.

From the top of the storage tank / 2, water flows through the feed valves 9 into the boiler. The water flow pattern for the pump ./2 is identical to that described above (all designations have an index of 2).

The storage tanks (i) and (7-2), but the feed time of cat 1a is under pressure slightly exceeding the operating pressure of steam in cat 301

le. The use of two series-connected battery tanks ensures the temperature and pressure of the feed water.

In addition to the main circuit, the circuit has an auxiliary circulation circuit, which is used:

a) when hot water is circulated in the system to protect it from freezing;

b) when warming up in cold water accumulator tanks filling them; and some re-liverys (for example, after a loan from a boiler);

c) in case of insufficient heating of water in the heater, which may be the result of insufficient steam supply (small opening or complete closing of the regulator);

d) when warming the water in the tender. In the cases of "a," b .i "in part

or a valve opens completely. Neither water from the storage tank 7-2 partially or completely goes into the circulation loop through pipe 12, plug 13, pipe, ISz plug, pipe 16, plug 15 and further along the main circuit.

In the case of "r" the plugs 15i and 15 are set to position III and the hot water from the batteries is drained into the tender ON pipe 172, and cold water is drawn in from the tender through the pipe / 7 ,.

FIG. 2 shows a diagram of the second embodiment of the device, characterized in that the battery tanks 7i and / 2 are not under full boiler pressure during the water supply to the boiler.

An additional element of this scheme is an IS standpipe with a non-return valve adjusted to a small overpressure (0.1-0.5 at), which informs the upper part of the accumulator tank with a water intake. This is required in the event of overfilling of the storage tanks, which may cause an increase in pressure in them above the allowable one.

Some increase in pressure in the injection diffuser of the preheater will be partially quenched by the resistance of the valves, and partially spent on vortex formation in the water space of the batteries.

Subject invention

Claims (2)

1. A device for preheating the feed water of a steam locomotive as a steam engine with an initial raw water flow through a water ejector, a feed steam pump and a jet mixing preheater, characterized in that in order to create constant feed water parameters in terms of pressure and temperature, He used in series two battery tanks, one of which is connected to the second stage of the feed pump, and the upper cavity of the other tank is connected to the boiler feed valves. 2. The form of the apparatus according to claim 1, characterized in that the pressure in the battery tanks is maintained above the operating steam pressure in the boiler. Auxiliary kpoHoB Auxiliary position kpoHoB 15