SU1211506A1 - Heat exchanger - Google Patents

Description

f

The invention relates to a power system. and can be used in mixing and surface type preheaters for regenerative condensate heating of steam turbines.

The purpose of the invention is to increase the efficiency of heat and mass transfer, which comes to an increase in the efficiency of turbochargers by more fully utilizing the high-potential heat of several exhausters and eliminating the displacement of low-potential turbine selection. .

The diagram shows the scheme of the proposed heat exchanger.

The heat exchanger includes a housing I with nozzles 2 for supplying steam, a pump nozzle 3 supplying water, a nozzle 4 for feeding a mixture of condensate and heated water, a block of 5-perforated plates and a horizontal underneath, a subassembly 6, a condensate collector 7 in which is placed the mixer 8, divided by a partition into sections 9 and executed in the form of a box with a perforated bottom 10. Each section of the mixer is connected to the corresponding one. A branch pipe 11 for supplying high-potential tesh1ons $ force, under the bottom 10, a coaxially paired-4 cross-flow separator 12 is placed, partially placed on nozzle 4. B: c) block 5 of the perforated plates to the case 1 is connected the outlet 13 of the vapor-air mixture.

The heat exchanger works (in a thickening manner.

Editor Y. Sereda Order 627/42

Compiled by V. Chirkov Tahred A "Babinets"

Circulation 399 VNIIPI. rocyjwpctBeHHoro USSR Committee 1

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Branch PPP, Uzhgorod, st. Project, 4

115062

The heated water and the heating steam enters the housing 1 through the pipes 2 and 3. The water is jetted through the block 5 of the perforated plates, heated by steam and drained.

I to the partition 6 and further to the condensate collector 7. The vapor-air mixture is discharged through a gas pipe. Hot (high potential) coolant flows, for example

10 the condensate of the heating steam supplied to the heater boilers, sealing condensate of the koitse seals of the feed pump comes through the nozzles 11 into the mixer 8, each into its site 9 and through the perforations85 of the bottom 10 seconds and the condensate collector 7 is mixed with the flow of the water mixture to the condensate it is additionally heated: and then discharged through section 12 into pipe 4.

Thus, the supply of highly-heat-treated (hot) heat carriers of each to its section 9 eliminates their mutual influence on their discharge, and also ensures reliable mixing of the streams when they exit from their section 9 with a condensate yoke, prevents the occurrence of water hammer due to collapse bubbles naps. This displaces the steam in the preheater, which increases the efficiency of the turbine installation. In addition, the use of various tagshash is relatively low-loss; The 8th source leads to an extra e.

Proofreader I. Muska Subscription

Claims (1)

HEAT EXCHANGING APPARATUS, mainly for a regenerative condensate heater of a steam turbine, comprising a housing with branch pipes for supplying steam, water and a mixture of condensate and heated water, a block of perforated plates with a horizontal partition installed under them, under which a condensate collector is placed, distinguishing with that, in order to increase the efficiency of heat and mass transfer, the heat exchanger is equipped with a cross-shaped separator and mixer, made in the form of a cylindrical box with a flat ^- perforated d beggar, divided by a partition into a section with nozzles for supplying high-potential coolant to the latter, while a cross-shaped separator is installed under the mixer coaxially with the branch pipe of the condeasat and partially located in the latter. ©. 1211506 2