RU193153U1 - WATER TREATMENT PLANT OF A HEAT ELECTRIC STATION - Google Patents

Abstract

The utility model relates to the field of water treatment and can be used at thermal power plants. The installation contains a desalting or softening unit for the source water included in the source water pipe, a decarbonizer with a tank - a battery for decarbonized water, a deaerator for make-up water with a tank - a battery for deaerated make-up water, which is connected by a make-up water pipe with a make-up pump included in it, to a return network pipeline water, which includes the lower mains heater and the upper mains heater connected to the heating of the steam turbine, to which is connected to capacitor. The source water pipe includes a source water heater connected by a heating medium pipe to a return network water pipe in front of the connection point of the make-up water pipe, and a cooled heating pipe of the source water heater pipe is connected to a make-up water pipe between the tank, the deaerated make-up water battery and the make-up pump. The technical result is an increase in the efficiency of the water treatment plant of a thermal power plant.

Description

The utility model relates to the field of water treatment and can be used at thermal power plants.

A known analogue is a water treatment plant of a thermal power plant, comprising a source water heater installed in a source water pipe of a water treatment plant. The source water heater is connected via a heating medium to a steam line for selecting a constant pressure turbine (see patent number SU 1267015). This analogue is adopted as a prototype.

The disadvantage of the analogue and the prototype is the reduced cost-effectiveness of the water treatment plant of the thermal power plant due to the use of a very valuable heat transfer medium, steam from the selection of the constant pressure of the turbine, as a heating medium in the source water heater. This leads to underproduction of electricity by this steam and, as a result, to a decrease in the efficiency of the water treatment plant of the thermal power plant.

The technical problem that the utility model addresses is the development of a water treatment plant for a thermal power plant.

The technical result achieved by the utility model is to increase the efficiency of the water treatment plant of a thermal power plant.

To achieve this technical result, a water treatment plant of a thermal power plant is proposed, comprising a source water heater installed in a source water pipe of a water treatment plant.

The peculiarity lies in the fact that the pipeline of the heating medium of the source water heater is connected to the return network water pipe in front of the connection point of the make-up water pipeline, and the pipeline of the cooled heating medium of the heater is connected to the pipeline between the tank - accumulator of deaerated make-up water and the make-up pump.

Next, we consider the information confirming the possibility of implementing a utility model with obtaining the desired technical result.

The drawing shows a schematic diagram of a water treatment plant thermal power station. The installation comprises a unit 2 for desalination or softening of the source water included in the source water pipe 1, a decarbonizer 3 with a tank - an accumulator of 4 decarbonized water, a deaerator 5 of make-up water with a tank - an accumulator 6 of deaerated make-up water, which is connected by a make-up water pipe 7, with it included feed pump 8, to the pipeline 9 return network water, which includes the lower network heater 10 and the upper network heater 11 connected to the heating of the steam turbine 12, to which a condenser 13 is connected. The source water heater 14 is connected to the source water pipe 1, which is connected by the heating medium pipe to the return network water pipe 9 in front of the connection point of the make-up water pipe 7, and the cooled heating medium pipe of the source water heater 14 is connected to the make-up water pipe 7 between the tank - battery 6 deaerated make-up water and make-up pump 8.

Water treatment plant thermal power plant operates as follows. The water in the source water pipe 1 is heated to 10-15 ° C by the exhaust steam of the turbine 12 in the condenser 13, then the water is supplied to the source water heater 14, where it is heated to a technologically necessary temperature of 30-35 ° C with return network water. Heated water in the source water heater 14 is supplied to the water desalination or softening unit 2, after which it enters the decarbonizer 3, then after the storage tank 4 decarbonized water is supplied for deaeration to the makeup water deaerator 5. Next, the deaerated make-up water enters the storage tank 6, from which through the make-up water pipe 7 enters the return network water pipe 8. The use of reverse network water as a heating medium in the source water preheater 14 eliminates the consumption of turbine extraction steam for heating the source water and uses this steam for additional power generation.

Thus, the new interconnection of elements allows to increase the efficiency of the water treatment plant of a thermal power plant.

Claims (1)

A water treatment plant of a thermal power plant, comprising a source water heater installed in a source water pipe of a water treatment plant, characterized in that the heating medium pipe of the source water heater is connected to a return network water pipe in front of the connecting point of the make-up water pipe, and the cooled heating medium pipe of the heater is connected to the pipe between the tank - accumulator of deaerated make-up water and the make-up pump.

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