SU70737A1 - Steam generator - Google Patents

Description

March 26

IN CONNECTION With the lack of water purification and deaeration devices in most boilers of low and medium power, the operation of steam boilers is accompanied by the formation of scale, which reduces the economic effect of the boilers.

The present invention provides a steam generator, eliminating the need for special water treatment devices. It uses an intermediate heat-transfer fluid circulating in the primary closed circuit and heated by radiation from the combustion chamber. The heat exchanger-evaporator of the steam generator is taken out of the lining limits.

A distinctive feature of the steam generator is that the heat exchanger-evaporator of a closed circuit (in water) is divided into two stages, between which the convective heating surface of the secondary circuit, heated by flue gases (Fig. 1), or the heating surface of any steam boiler (Fig. 1) is sequentially connected. 2), or, finally, the heating surface of any steam

boiler with low pressure (Fig. 3). In the latter case, an additional feed pump is installed between the ethnm hot house and the second stage of the heat exchanger-evaporator, which feeds the boiler water to the indicated stage to produce higher pressure steam.

The heat exchange heat sink from the radiation part / enters the heat exchanger-evaporator 2 and returns back to the radiation part of the circuit. Water is pumped by pump 4 to the first stage of the heat exchanger-evaporator, and from there, after heating it to an appropriate temperature, the convective part 3 passes successively, the second stage of the heat exchanger-icnarator. diagrams are indicated by arrow c).

If the convective part 5 is made in the form of a steam boiler, then the radiation surface of the closed loop of the heating liquid bore is embedded in the furnace of the same boiler.

If the convective part 5 is a vacuum generator; r | 1947 to the USSR Ministry of the Textile Industry, No. 2835 (354085). Published on March 31, 1948.