Heating plant with hydraulic steam turbine

Abstract

The invention relates to equipment for use in district heating systems. A heating plant with a hydraulic steam turbine is characterized in that it comprises: a hot water boiler, from which the heated water of the boiler circuit is fed to the inlet of a hydraulic steam turbine and through a three-way valve to the inlet of a heat exchanger of a second network water heating stage; a hydraulic steam turbine, which constitutes the drive of an electric generator, from the outlet of which turbine a water-steam mixture is fed into a separator; a heat exchanger of a first network water heating stage, said heat exchanger being heated by steam from the separator of the hydraulic steam turbine; a condensate pump for feeding condensate from the separator to an inlet of a pump of the boiler circuit, said pump feeding water to an inlet of the hot water boiler, wherein network water is fed successively into the heat exchangers of the first and second heating stages, and the three-way valve is connected to a bypass pipe, via which the flow of boiler water can be partially or fully redirected to the inlet of the pump of the boiler circuit, bypassing the heat exchanger of the second heating stage. The technical result achieved by this combination of features is a stable hydraulic steam turbine output irrespective of the temperature of the network water.

Description

[0001] BOILER HOUSE WITH HYDROSTEAM TURBINE

[0002] The invention relates to equipment used in centralized heat supply systems.

[0003] An autonomous heat supply system is known from the existing level of technology, comprising a hot water boiler with auxiliary equipment and connecting pipelines, a network pump with a heat consumption system, characterized in that the installation additionally comprises a hydro-steam turbine with an electric generator, a condensation unit, wherein the water outlet from the hot water boiler is connected to the heat consumer and to the input of the hydro-steam turbine, and the outlet from it is connected in series to the condensation unit and the pump, and the outlet of the latter is connected to the input of the network pump, wherein the electric generator is connected to an electric cable, a network pump and to the auxiliary equipment (RU 19305 U1 Published 20.08.2001).

[0004] The disadvantage of this solution is the dependence of the water temperature at the inlet to the hydro-steam turbine, and, as a consequence, the power of this unit on the temperature schedule of the heating network.

[0005] The task for which the claimed invention is intended to solve is to ensure stable power of a hydro-steam turbine regardless of the temperature schedule of the network for which the boiler operates.

[0006] This problem is solved due to the fact that the boiler house with a hydro-steam turbine includes: a hot water boiler, from which the heated water of the boiler circuit is fed to the inlet of the hydro-steam turbine and through a three-way valve to the inlet of the second stage heat exchanger for heating the network water; a hydro-steam turbine, which is the drive of the electric generator, from the outlet of which the steam-water mixture is fed to the separator; a heat exchanger of the first stage of heating the network water, heated by steam coming from the separator of the hydro-steam turbine; a condensate pump feeding condensate from the separator to the inlet of the boiler circuit pump, which feeds water to the inlet of the hot water boiler, while the network water is sequentially fed to the heat exchangers of the first and second stages of heating, and the three-way valve is connected to a bypass pipeline through which the flow

[0007] 1

[0008] SUBSTITUTE SHEET (RULE 26) boiler water can be partially or completely redirected to the bypass of the second stage heating heat exchanger to the inlet of the boiler circuit pump.

[0009] The technical result provided by the given set of features is the stable power of the hydro-steam turbine, independent of the temperature of the network water.

[0010] The essence of the invention is explained by the drawing (Figure 1), which shows a boiler room with a hydro-steam turbine with the following positions:

[0011] Hot water boiler - 1;

[0012] Hydro steam turbine - 2;

[0013] Three-way valve - 3;

[0014] Second stage heating heat exchanger - 4;

[0015] First stage heating heat exchanger - 5;

[0016] Separator - 6;

[0017] Condensate pump - 7;

[0018] Boiler circuit pump - 8; Bypass pipeline - 9.

[0019] A boiler house with a hydro-steam turbine operates as follows.

[0020] The water of the boiler circuit heated in the hot water boiler 1 is fed to the input of the hydro-steam turbine 2 and through the three-way valve 3 to the input of the second-stage heat exchanger 4. In the hydro-steam turbine 2, the water boils. The water-steam mixture expands, generating mechanical power, which is converted into electrical power in the generator. From the output of the hydro-steam turbine 2, the steam-water mixture is fed to the separator 6, where the steam and water flows are separated. The steam flow is directed to the first-stage heat exchanger 5 for heating the network water, and the water to the input of the condensate pump 7. The condensate from the output of the heat exchanger 5 is also drained to the input of the pump 7, which pumps the condensate to the input of the boiler circuit pump 8, which feeds water to the input of the hot water boiler 1, ensuring the circulation of water along the boiler circuit. Network water is heated by sequentially feeding it into the heat exchangers of the first 5 and second heating stages 4.The temperature of the network water at the outlet of heat exchanger 4 is regulated by changing the flow rate of boiler water through.

[0021] 2

[0022] SUBSTITUTE SHEET (RULE 26) the specified heat exchanger, which is implemented by a three-way valve 3 by partial or complete bypass of boiler water through a bypass pipeline

[0023] 9, through which the boiler water flow can be redirected to the bypass of the second stage heating heat exchanger 4 to the input of the boiler circuit pump 8.

[0024] SUBSTITUTE SHEET (RULE 26)

Claims

Invention formula BOILER HOUSE WITH HYDROSTEAM TURBINE A boiler room with a hydro-steam turbine, which is characterized in that it includes: a hot-water boiler, from which heated water of the boiler circuit is fed to the inlet of the hydro-steam turbine and through a three-way valve to the inlet of the second stage heat exchanger for heating the network water; a hydro-steam turbine, which is a drive for an electric generator, from the outlet of which a steam-water mixture is fed to a separator; a heat exchanger of the first stage of heating the network water, heated by steam coming from the separator of the hydro-steam turbine; a condensate pump feeding condensate from the separator to the inlet of the boiler circuit pump, which feeds water to the inlet of the hot-water boiler, wherein the network water is sequentially fed to the heat exchangers of the first and second heating stages, and the three-way valve is connected to a bypass pipeline, through which the flow of boiler water can be partially or completely redirected to the bypass of the heat exchanger of the second heating stage to the inlet of the boiler circuit pump. SUBSTITUTE SHEET (RULE 26)

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